Disclaimer: Um. I'm a fifteen year old girl, so no. I own nothing. Even the computer I'm writing this on was purchased for me as a Christmas present from my parents.

The ride back to Beacon Hills from Mexico seemed like an eternity or like a single second. Time started to bend in on it's self. They had "borrowed" a junkyard but still functional car for Kira and Malia to get home so that they had space to lay Derek out in the backseat of Stiles's jeep. He had fallen unconscious almost as soon as they had loaded him in to the car and still hadn't come out of it when they pulled up in front of Deaton's clinic.

Lydia ran inside to warn Deaton that they were coming in and Kyla secured the blanket they had wrapped around Derek before Scott swung him over his shoulder and carried him inside. Stiles opened the door for them and Kyla darted inside out of the rain. Water was pouring down like someone had taken a hose and turned it on full blast over their heads. The ten foot dash from the car had been long enough to leave Kyla's hair completely soaked.

Deaton shoved everything off of an exam table and Scott laid Derek down carefully. Kyla had only talked to the veterinarian/druid a few times, but Scott trusted him implicitly, and she was willing to take Scott's word for it that the vet was one of the good guys. Deaton caught sight of Derek's smooth face and teenaged features and his dark eyes widened. "Oh wow," he commented, pretty much voicing the feeling of the group. "Oh shit" would have worked too.

"Wow?" Stiles said trying not to sound too hopeful. "Wow as in I've seen this before and know exactly what to do kind of wow? Because that's the kind of wow we were hoping for."

Deaton shot the teen a slightly overwhelmed look. "I think you may be overestimating my abilities."

Kyla grimaced. it wasn't what they had hoped for but she had to give the man props for being honest. She reached out to check Derek's pulse and noticed that his normally warm skin was frigid against hers. He had been cold on the trip back from Mexico but not this cold. "He's cold," she told the vet.

Lydia immediately reached out and took Derek's other hand. "Very cold," she confirmed.

Deaton touched a finger against Derek's forearm and nodded quickly. He took a pen light from his pocket and shone it in to Derek's eyes to check pupillary response. He shook his head as Scott asked if Derek's newly teenaged state would be permanent. That had basically been a line of thought that Kyla had been trying to avoid. "I'm not sure if a medical diagnoses if even possible," Deaton admitted hopelessly.

"So what do we do?" Stiles asked fidgeting anxiously. "What do we know?"

Deaton straightened up and turned off his flashlight, stowing it back in to his pocket. "Until he wakes up? Probably not much. It's probably best to leave him with me."

Scott nodded, having explained what they had figured out about Kate to the veterinarian already over the phone. "You mean he'll be safe from Kate?"

The druid looked up at his protégé seriously. "She's alive. If what you learned is true and she is what you think she is then she won't able to be walk passed that gate."

"Mountain ash," Kyla had observed the familiar color of the wooden gate when they had walked through it to get to the exam room. She had known the type of wood on sight because it made up a large amount of the Institute, not to mention her cabin back at camp. "You used Rowan wood."

Lydia tucked the blanket a little closer around Derek just so that she was doing something slightly useful. She bit her lower lip regarding Derek's newly teenaged face. He looked more peaceful, and much more vulnerable. "Why would Kate want to do this to him."

Deaton sighed, shaking his head. "Knowing Kate her reasons won't be any good for anyone but her."

Kyla's fingers tightened slightly around Derek's hand. "And by that you mean bad for everyone else." She moved her thumb lightly against the back of Derek's hand. He shifted slightly, murmuring. Kyla mentally resolved that s soon as she came face to face with Kate Argent she was going to put an arrow through the bitch's head.

Deaton nodded. Stiles let out a deep breath and cracked his neck, blinking repeatedly. Scott's eyes had begun to lose focus. Lydia looked even paler than usual. Kyla only felt awake because the moon had begun gaining strength in the sky. If she could reorganize her sleeping patterns enough she was almost always more alert at night time.

"You guys should probably go home," Deaton said, looking at them. "He doesn't look o be in any danger, so maybe the rest of you should go home and get some sleep," he let out a slight smile. "It is a school night." Kyla almost laughed at the absurdity of the statement. Her werewolf maybe boyfriend had been turned back in to a teenager and was unconscious in a veterinary practice. The last thing she was thinking about was school. Scott and Stiles both looked similarly startled by the idea. "It's time you four started taking care of you own lives again."

Scott rubbed his eyes. "Someone should still stay with you."

Deaton nodded allowing it and Kyla and Lydia looked at each other. Out of the four of them, the two girls were least likely to suffer from missing a few classes. Lydia had a 5.0 GPA, and despite her dyslexia Kyla managed a minimum of a 3.8. "We'll stay." Kyla said. "Our grades are fine. Besides, can always play the dyslexia card if some teacher tries to be a hard ass.

Stiles eyes Lydia's hand gripping the one of Derek's that wasn't intertwined with Kyla's. "I'm so not okay with this."

"Good thing we didn't ask for your approval then," Kyla said evenly.

"Guys," Lydia said looking between Scott and Stiles. Her voice held the same bossy tone that Annabeth used on Percy. "Go."

Stiles shook his head. "No."

Scott merely released a deep breath and zipped up his jacket. He took a step back and flicked his eyes between Kyla and Lydia. "Text us if anything happens." They both nodded and Scott began dragging Stiles out the door, ignoring his friends protests. Sometimes being supernaturally strong paid off in not having to listen to what people said they wanted.

Deaton slipped away as the bell over the front door rang and returned a few moments later with coffee and chairs for the two girls. They both settled in to make themselves comfortable, and Lydia was fast asleep with her chin in her hands within half an hour. Kyla just sipped at the coffee. It wasn't great but it was decent.

She managed to keep herself awake for a while. She checked Derek's pulse every half hour or so, and was glad to find it picking up it's rhythm. His body temperature seemed to be climbing to. The last of her energy reserve faded with the week moonlight, and Kyla found herself asleep just as the first rays of the sun began to creep in to the room.

Her hand was boiling. That was the first thing Kyla noticed when she woke up again. She looked to where her fingers wee still woven with Derek's and immediately identified him as the heat source. Now his temperature seemed unusually high. She gently untangled her fingers, and stood, stretching her back like a cat.

Deaton glanced at her momentarily, and then went back to taking Derek's pulse at the vein in his neck. Slowly Lydia lifted her head, blinking sleepily before asking, "How's he doing?"

Deaton frowned. "His heart rate is alarmingly high."

Kyla used the fingers of her other hand to confirm what he had said. "He's a lot warmer now to," she chipped in. "When I woke up I felt like my hand was burning."

The druid's brow was furrowed in thought. He looked between the two girls. "Lydia, Kyla, I'm going to try something." Uh oh was Kyla's gut reaction. Whenever she heard those words the general follow up involved running, violence, and screaming. Not necessarily in that order.

"I want you both to keep holding his hands if that's okay," both of them nodded, and Kyla re-entwined her fingers with Derek's. Deaton reached for a small scalpel, and very carefully and deliberately cut a long incision in the skin of Derek's forearm on the side that Lydia was holding.

Kyla glanced at Deaton in surprise and was about to ask him just what the hell he thought he was doing, but the cut he had opened sealed almost immediately behind the scalpel. "I'm not an expert in Lycanthropy," she said slowly. "But I have both injured, and cared for enough previously injured werewolves to know that that was way too fast."

"What does it mean?" Lydia asked worriedly.

Kyla shook her head. She had no idea what it meant. She hadn't seen enough werewolves injured to know what the typical healing time frame was. She only knew that it was drastically accelerated compared to a human. Deaton shrugged as well. "I'm not sure. Let's try something else. Lydia grab me a five millimeter syringe, top drawer."

Kyla frowned slightly, not sure how she felt about this direction. It would royally piss her off if someone started doing medical experiments on her while she was unconscious.

Lydia flitted away to get what Deaton had asked for and the druid himself went to get something else. Kyla stayed were she was, she had begun to rub random patterns on to the back of Derek's hand with her thumb, humming to herself quietly. Looking down, she realized she was unconsciously tracing healing runes. Of course, the runes wouldn't work on a werewolf anyway. She had tried to spark some kind of healing process for Derek but it had been like his system was unconsciously resisting it. The only thing that Kyla could attribute that to was the fact that apart from being younger Derek was actually physically healthy.

Derek's hand twitched in hers and Kyla stilled. Then she winced and withdrew her hand sharply as five long claws dug in to her skin. Slowly, Derek pulled himself up to a sitting position. "Derek?" she said gently. "Derek can you hear me?"

The werewolf ignored her and instead focused in on the higher pitched voice of Lydia asking the same thing. Deaton's soothing tone saying that they were friends didn't seem to be helping. Derek's breathing was labored and Kyla reached out tentatively and placed a hand on his shoulder. "Derek-"

She broke off when she found that Derek's eyes had turned electric blue and his canine teeth had elongated in to fangs. Suddenly the memory of how the older Derek had reacted to her scent on one of the first occasions that they had been face to face flashed across her mind. He hadn't been fully in control them either and had had to take several minutes to get a handle on himself. That had been a version of Derek with at least half a decade more experience than this one. Oh damn...

Then suddenly he ducked his head and blocked his ears with both hands. Suddenly he shoved Deaton in to the wall and spun around towards Kyla, zeroing in on her. Kyla backed up slowly. "Lydia," she said with controlled calm. "I'm going to need to run now. Call Scott as soon as you take care of Deaton, go it?" She didn't wait for a response. Instead she spun around and ran like a hellhound was after her. Unlike some people, she actually had the experience to make that comparison.

Derek sat frozen in the wreckage where his house should have been. Nothing made any sense! His mind was a terrifying mess of blank spots. His body was filled with a thrumming, nervous energy and all of his senses seemed even more magnified than usual. Every sound and every smell was immediately brought to his attention. The remains of his house seemed completely abandoned. The familiar scents of his family members were completely absent and the whole place smelled like ash and machinery.

Ever since he had managed to calm down enough to stop moving he had had the terrible sensation that he had missed something, but all of his memories seemed to be in the right placed before they cut off into emptiness. It was as though his mind was searching for memories that should be there, only Derek had no clue what might be missing. The feeling was like walking up stairs in the dark and taking an extra step only to find that there was nothing to put your foot on.

His control was even worse than normal. He had gotten good enough at keeping himself in check that he only ever had trouble with it on a full moon. Yet had chased the girl from the animal clinic through almost three miles of forest before losing her and finding himself at the Danger Keep Out sign on the fence around the wreckage of his home. He couldn't even pick out details about the girl he had chased apart from the smell of moonlight, long auburn hair, and dark green eyes. She had to be fast to since she had managed to get away from him.

The sounds of tires on the road, the slamming of car doors, and two sets of approaching boots registered in Derek's hearing but he ignored them. "Excuse me young man!" a polite voice with an edge of authority to it called. The voice didn't sound like the speaker could actually be much older than him and Derek didn't react.

The other man laughed derisively. "You're calling him young man?"

"Shut up Haig," the first voice said with an edge of annoyance. The footsteps got closer but Derek still didn't react. "I'm sorry but you can't be here."

"Hey dumb ass!" the man his partner had called Haig said loudly. "You ever hear of no trespassing?"

Ager and annoyance spiked through Derek at that. He lived here! His family owned private property. If anyone was trespassing it was the two of them! He spun around, staying crouched to the ground and his eyes found two unfamiliar men wearing deputy uniforms for the Sheriff's Department. "This is my house," he stated. He turned back to the piled of rubble in front of him. All around he could see remnants of old cabinets and walls that used to form parts of his home.

Haig sounded contemptuous. "No one's been here for years kid now get the hell out."

"Haig!" His partner shot at him sternly. "Maybe a slightly gentler touch?" Derek heard the kinder of the two shift a bit nearer to him. "Are you alright?" he asked. "We can help you if something's wrong."

Derek barely processed what he was saying. Years? That's what the other deputy had said. No one had lived here for years. But he wasn't years older! He and his family had all been living here only a few... There it was again. Derek couldn't remember how long ago the gap in his memories went. "What happened to my house?" he asked hopelessly. "Where's my family? Where's my mother?" His mother would know how to help him. HIs mother always knew how to help.

Haig ignored him and grabbed his arm, yanking him up. The confusion and distress Derek had been feeling turned to anger and boiled over. He yanked his arm free, not caring how much strength he used and twisted the deputies arm at a sharp angle. All of the Hales were taught to fight before the change ever had a chance to take hold. The more prepared they were the better in case the hunters showed up. Not all the hunters were bad though. Kate was different.

"Hey!" the nicer of the two deputies exclaimed. "Hey just take it easy!" Derek spun towards him, anger still bubbling in his chest. "Haig stand down!" Derek heard the deputy order. A Cold shock ran through him witch immediately turned to the burn of electricity. He jerked and staggered.

Then a female voice he vaguely recognized met his ears. "What the hell are you doing?" the voice's owner demanded to know. He heard the sounds of running feet and then the sound of one of the men being shoved out of the way. The shocking ceased and Derek curled in to a ball with his knees to his chest as he tried to regain his breathing. The one good thing about the physical pain was that it had stopped him from transforming in front of these humans.

"Hey," the girls voice said. Derek sensed that the girl had crouched down in front of him. "It's alright," she said gently. Then in a very soft voice, so quiet that he could only pick it up with his wolf hearing she said. "Derek look at me." Derek looked up to see the girl he had chased through the woods. Strangely, she didn't look afraid of him. Instead she looked concerned, like she was worried about him.

The improbable mix of the smell of sunshine, moonlight, and something close to roses brushed across his nose. he breathed in deeply on a reflex and felt his eyes flash blue. He buried his head against his knees again and tried desperately to calm down. Alpha, Beta, Omega, he repeated to himself the way that Peter had taught him. Alpha, Beta, Omega. Alpha, Beta... It wasn't working.

"Focus," the girl advised. "You need to find something steady. Focus on my heartbeat if you have to." Derek immediately picked up the steady rhythm of her heart. It sounded a bit different from the two deputies. It was a little faster, smooth, and steady. His eyes shifted back to normal and the burning in his gums vanished as they stopped anticipating the arrival of his teeth.

"Good," the auburn girl said. Her fingers had closed lightly on his wrists, monitoring his pulse and Derek looked up. Her eyes really were incredibly green. "Now match your breathing with mine if you can." She began to take slow, deep breaths and Derek copied her. He could feel the pounding of his heart slow against his rib cage. With all of his focus on the girl his eyes, nose, and ears felt less hypersensitive.

This girl obviously knew more about what was going on than the two deputies did. She had seen him as a werewolf and she hadn't seemed afraid. She had run, but she didn't seem scared of him. Derek caught sight of the black mark of an eye on the back of her right hand and something clicked. "Shadowhunter," he breathed.

The girl nodded. "I'm not here to hurt you she promised. The deputies won't either. But I think you'll have to go with them for a bit."

"What happened to my house?" Derek asked her again. Hopelessness felt like it was wringing out his insides. "Where's my family?"

The girl looked almost like she wanted to give him a hug or maybe even cry. Her hands tightened around his. "I can't say very much," she said. "I didn't know your family. They're not here right now. I know where your uncle Peter is though. You can see him later maybe. I've got some friends who will explain things, they just need to figure out some stuff first."

Derek met the girls eyes, her heart hadn't indicated that she was lying, and she did know something about what had happened. So he gave her a small nod. His head felt like someone had filled it with cotton and his entire body hurt from the deputy's tazer. His eyes shut and his head drifted forward landing on top of his knees. The girl's left hand was trapped between his right hand and his head. Derek felt her right hand come free of his left and her fingers brushed lightly against his hair.

"Kyla do you know this boy?" the nicer of the two deputies asked. Kyla, Derek thought. The girl's name was Kyla. The name seemed achingly familiar somehow.

Derek sensed the girls anger pick up but it wasn't directed at him. "I know him well enough to know he'd already had a hell of a bad day before you and your trigger happy friend showed up Parrish!" Kyla sounded severe as she told the deputies off. "Help me get him to your car. Not you!" she snapped as Haig moved to obey her. "You tazed him. Parrish you help."

"I don't see why he can't just walk," Haig muttered sulkily.

Deputy Parrish helped Kyla moved Derek so that he was standing up. They began to walk to the police car. "Gee I don't know," Kyla said sarcastically. Derek could feel her anger at the deputy spiking. "Let's taze you and tell you to get up and walk and see what happens."

Despite the situation and the pain he was in as Kyla and the deputy helped him in to the car, Derek felt his mouth form a slight smirk at her words. Kyla was looking down at him. "Unless you want me to sit on your lap you had better scoot over."

"Worse things have happened," Derek couldn't help saying cheekily. He felt slightly pleased as a small blush crept through Kyla's face. Pretty didn't do the girl justice. Beautiful was more accurate. Where Kate was all purposeful movements and careful words Kyla was more natural and calm. She was more like Paige. Derek immediately slammed the door on those memories. That was one set of cuts that hadn't had time to heal yet.

Kyla rolled her eyes but a small smile formed on her mouth. "Fine," she retorted climbing in to the car to perch delicately on top of him pulling the car door shut behind her. "Remember that this one was your idea." She reached behind her, her arm contorting to reach the seatbelt strap. Derek simply shifted her so that her back was more towards the window and wrapped his arms around her middle. She was small enough that his arm covered her midsection and still had length left to go. Kyla looked at him and shrugged muttering. "Probably safer than a seatbelt anyway."

Haig checked on them through the rearview mirror and sneered as he saw their seating arrangement. Derek gave the man his iciest of dark glares until the deputy looked away. He tipped his head back against the seat and blinked, trying to stay awake.

Kyla shifted slightly, covering his hand with one of hers. "Sleep," she ordered. "You need it. I'll wake you up when we get to the station.

Almost as soon as the words were out of the Nephilim girl's mouth, Derek was unconscious.

Kyla didn't understand why she had to be handcuffed to the bench. She had gotten away when Derek was chasing her by running through a stream and masking her scent. Her converse and the hems of her jeans were still drying after that maneuver. On a hunch, she had doubled back to the Hale House in time to see Haig taze Derek.

The younger version of the werewolf when he was conscious was a bit of a surprise. He seemed less damaged by the world for a start. Younger Derek was more sarcastic and more confident judging from his seating comment. Kyla wondered if this version of Derek had completely vanished as he got older, or if the Derek she knew simply buried him.

At the Sherriff's Station, Derek had been finger printed and they had both been handcuffed to the same bench they had been attached to when the noitsune had put a bomb on the Sheriff's desk. Fun times. It was a good thing she hadn't been fingerprinted to. The number of supposed crime scenes where her prints could probably be found would definitely raise a few flags.

Parrish approached with the handcuff key and released Kyla first before turning to Derek. He glanced over to where his partner was sitting at the computer. "The other deputy thinks I'm an idiot for asking this," he started. "But I have a feeling that if I take your cuffs off your going to be okay. And I think your going to help us so we can figure out what happened to your family and get you out of here. Am I right?"

"The other deputy is the idiot," Derek said quietly. Kyla wondered what it meant when she could see more resemblance to the older him when he was insulting people.

A grin spread across Parrish's face. "Can't argue with that." Then he left to inspect whatever Haig had found on the computer.

Kyla frowned slightly. What had happened to Derek's family was that they had been burned to death by the same psychopath that aged him backwards. Derek clearly had some kind of amnesia, and Kyla knew from dealing with Jason that trying to explain that would not go over well. Derek seemed to have gone back to the same age mentally as the one he was now at physically. How old was he then? sixteen, seventeen? Come to think of it, Kyla didn't even know how old older Derek was.

"I've run the kid's prints eight times," Haig said with frustration. "This is all that comes up."

Parrish frowned. "Derek Hale?"

Shit Kyla thought to herself. Derek had been arrested at least three other times. Of course his finger prints were in the police database. Probably a mug shot to go with them. She was willing to bet that the picture would not be a version of Derek that looked very much like the one she was sitting next to.

"Did you say Hale?" the familiar tones of Sherriff Stillinski asked as the man walked in to the room and examined the computer. Kyla let out a relieved breath and thanked the gods for whatever intervention they had pulled for this. The Sherriff stared at the computer screen for a long moment. Then he looked up at Derek. Then back to the computer.

Derek's eyebrows shot up questioningly as the Sherriff came around the desk and crouched in front of him, squinting. He angled his head from side to side and Kyla knew what he was seeing. He was seeing a wide forehead, hazel green eyes, particular ears, black hair, equally dark eye brows, a full mouth, and a half skeptical half board expression. Kyla shot him a pleading look, begging him to understand and not say anything. The Sherriff backed up again and looked back at the picture on the computer.

Stiles and Scott shot in to the room and the Sherriff let out a relieved breath. "I'll handle this," he said to the deputies, trying to keep his voice under control. He jerked his thumb at the two boys and then to his office. He turned back to Kyla and hurriedly waved her in as well.

Kyla looked down at Derek. "You going to be okay?" she asked.

He nodded once and released the hand he had gripped automatically when they were both released from the handcuffs.

She tried to give him a reassuring smile. "If you start loosing it listen to my heartbeat," she advised quietly. "I'll be back in a moment." Then she got up and slipped in to the office.

The Sherriff slammed the door shut behind her and leaned back against his desk, looking at her, Scott, and Stiles. "I want you to be honest with me," he said. "Absolutely, and completely, honest with me. Scott held up his hand in a gesture to go ahead, Stiles jittered slightly, Kyla simply looked at him. Her answer would probably depend on his question. "Have you been time traveling?"

"Hang on, what?" Stiles said, completely taken off guard by the question. Scott looked like he was trying to prepare some sort of explanation.

"Because if time travelling is real, you know what, I'm done!" the Sherriff proclaimed, using his hands to emphasize his point. "I'm out! You are going to be driving meto Eichen House!"

Stiles tried to clam his dad down. "We haven't been time traveling okay? That's still completely unreal."

Kyla cleared her throat awkwardly, thinking of the time when she, Clary, Jace, and the Lightwoods had ended up in 1878 due to a portal malfunction. "Well, technically..."

Stiles looked at her dumbfounded. "Seriously?" he asked. "Time traveling? You've gone time traveling!"

"Only once," Kyla said. She looked at the Sherriff. A vein n his temple looked like it might be about to pop. "It was a complete accident," she tried to reassure him. "Never to be repeated."

Scott decided to cut in. "We found him like that."

"Where?!" the Sherriff demanded. "Swimming in the Fountain of Youth!?"

"No that one is still a myth," Kyla told him. "And I mean really a myth not like my mom. She's technically in a myth but she's real. The Fountain of Youth is like actually a myth."

Stiles stopped her from saying anything else by starting his explanation. "No. We found him buried in a tomb of wolfs bane. In an Aztec temple in Mexico underneath a church in the middle of a town that was destroyed by an earthquake." He stopped talking when he caught the looks of Scott and Kyla which very clearly told him that he was not helping.

"You told me you went camping!" the Sherriff said, his voice dropping in volume as he struggled to keep his cool.

"Well," Kyla said. "Technically we were camping."

Stiles nodded. "Yeah! Just... in Mexico."

The Sherriff gestured at his son wordlessly. He looked like he was trying to form words but couldn't quite remember how. Scott seized his opportunity. "Derek's been aged backwards," he explained. "He can't remember anything. He chased Kyla three miles in to the woods this morning."

"We just need to talk to him," added Stiles.

The Sherriff sat and gestured to Kyla. "So far the only one he'll talk to is Kyla."

Scott glanced at her and then craned his head back around to look at Derek. The Alpha frowned. "It looks like he's started to try and listen to something."

"Me," Kyla provided.

Scott's head snapped back around and Stiles stared at her. "Why is he trying to hear you?" The ADHD boy asked.

She shrugged. "Not my voice," she explained. "My heartbeat. When I found him he had just been tazed and looked like he was about to lose it on Haig and Parrish. I told him to listen to my heartbeat until he calmed down. When I came in here I told him to keep using it if he needed." She shrugged again in the face of the boys still struck looks. "That's what werewolves do for control right? Focus on one thing."

"Not normally a person," Scott said with a slow shake of the head. "We call it an anchor. I used to use Allison but that was weird. Derek always told me he used anger."

"According to Peter he used a girl named Paige for a while," Stiles babbled. "But then he had to kill her so..." he trailed off as he saw Kyla staring at him. Well, that explained why Derek's wolf eyes were blue. It also explained why this younger version of Derek still had sadness in his eyes. Gods, to him this girls death was probably still fresh. And if he had had to kill her... Her thoughts trailed off then.

Scott shook his head, dismissing the subject from his head. "Let's go talk to him then. I am an Alpha. maybe that'll help.

They all went to walk out of the room but the Sherriff held Kyla back. "Nuh uh," he said. "I don't care who you're keeping calm you still have paper work to fill out before I can let you go.

Half an hour and several pages of highly unnecessary paperwork later they were allowed to leave. Scott sped off on his motor bike to talk to Peter and with much grumbling Stiles had loaded Kyla and Derek in to his jeep. Derek had grabbed Kyla's hand absently as if for reassurance and her arm was stretched over the back seat towards him. His skin still burned against hers and Kyla tried not to worry too much about his feverish temperature.

"Okay," Stiles said as they entered the McCall house. "We're just going to sit and wait for Scott. We're going to sit quietly and we're not going to call or talk to anybody. Okay?"

"Do I talk to either of you?" Derek asked.

"You can talk to me," Kyla told him at the same time as Stiles said, "No."

Derek narrowed his eyes at Stiles. Even aged backwards Derek was substantially bigger than him. "Fine," he said with a flatness that had obviously carried through into his adult life.

"Good." Stiles said fervently.

Kyla managed to see Agent McCall standing in the living room at the same time that Derek did. "Whose going to talk to him?" Derek questioned.

Stiles let out a startled yelp of surprise He talked with his hands the same way his dad did. "Are you getting taller?" he demanded irritably.

The FBI agent furrowed his eyebrows at the three (two?) teenagers in front of him. "What are you guys doing here?"

"Waiting for Scott," Derek said simply.

"Yeah me to," the agent said. "We were supposed to have dinner," he held up a large take out bag. "I brought extra, are you guys hungry?" Kyla felt her heart softening towards the agent a little bit. He may not be fantastic but he was at least making an effort as a parent. He was even trying to do something nice for his kid's friends.

"Yes," Derek and Kyla said fervently at the same time Stiles said "No. We're not hungry."

Derek stared at him. "No I'm starving." Kyla was to. Running three miles on an empty stomach meant the need to do major calorie replacement. Derek probably hadn't eaten since being thrown in to the Aztec tomb gods only knew how long ago.

Stiles persisted. "None of us are hungry. Thanks though."

Agent McCall looked at him levely. "Well if you're not hungry Stiles, Kyla and your friend can still eat with us," he looked at Derek. "What's your name?"

"Miguel," Stiles cut in before Derek could say anything. He gave Derek an awkward pat on the shoulder as Kyla and Derek both looked at him strangely. Why Miguel of all names. "My cousin Miguel," Stiles continued. "From Mexico," he glanced down at where Kyla was still holding Derek's hand. "Who is dating Kyla apparently."

Raising an eyebrow, Agent McCall said, "Es estaro natural de Mejico Miguel?"

Kyla silently crossed her fingers in the hopes that Derek had taken Spanish in high school. Derek opened his mouth and answered smoothly. "Yo no soy nativo. Pero me paso mas tiempo alli." Apparently Derek had been very good at Spanish in high school.

"Fantastic," Agent McCall said satisfied. "Want an eggroll?"

Half way through dinner Agent McCall asked. "What did you say your last name was Miguel?"

Stiles cut in again. "It's Juarez. Cinqua, de Arro."

Kyla cut him a look. Seriously? He hadn't been able to come up with anything else? "That's a-" Agent McCall said. "That's a mouthful. How do you spell that?"

Derek shot Stiles a look, the subtext of which seemed to be; you got yourself into this one. I'm not going down with you. Stiles let out a huff. "Phonetically," he muttered. He shot a murderous look at Kyla who shrugged. It wasn't her fault he hadn't been able to come up with a normal last name.

Derek's eyes landed on Agent McCall's badge. If they were in a cartoon a little light bulb would have been flashing above his head. "Mr. McCall you're an FBI agent," Oh shit.

Kyla swallowed her mouth full of noodles. Stiles seemed to feel something bad coming as well. "Low level," he intervened. "Very low level. Doesn't even have a voice..."

"Do you investigate murders?" Derek pushed. Kyla reminded herself to keep calm. He might honestly be interested in what an FBI agent did.

Agent McCall shrugged. "Sometimes. If it's a federal crime."

"What about fires." Screw calm. Shit.

"Hey Stiles," she tried to interrupt casually. "Shouldn't Scott be here by now? Maybe you should go call him." Stiles nodded frantically and pulled out his phone.

"What kind of fires are you talking about?" Agent McCall continued calmly on with his conversation.

Here we go. Kyla thought. "Do you know anything about the Hale family?"

Stiles's head slammed in to the wall with a painful smack. Kyla had managed to avoid the same fate by some miracle of luck. Maybe Derek wasn't angry enough yet. Maybe it was within Hale family policy not to hit girls. Doubtful. "Okay I didn't lie," Stiles's said, his face still smashed in to the wall. "I omitted certain truths. Vital truths now that I think about it."

Derek pushed away from the wall. "I don't want to talk to you!" he said angrily. "I want to talk to the alpha. I'll talk to Scott!"

"Okay," Stiles said, backing towards Scott's bedroom door. "I'm going to go get him. My phone's downstairs. I'm going to call him real quick. You stay there. You can just hang out with Kyla. Kiss her or something if it would make you feel better." Kyla glared at him as he swiftly backed from the room. "Don't move!" he cried doubling back. Then he vanished back down the hall mumbling inaudibly.

Derek spun on Kyla. "Why didn't you tell me?!"

"It wasn't my business to," Kyla said quietly. "Everything had gone wrong for you already today, and I don't know enough about what happened to answer your questions," she bit her lower lip, watching him carefully. He seemed o be calming down slightly. "I've had a few friends get amnesia before," she explained. "You can't just provide answers when someone has no memory. You have to just try to find a way to help them remember by themselves."

Derek took a deep breath and sat on the bed. "Okay," he murmured, rubbing his temples before looking up sharply. "You owe me a couple answers then. Questions about you not me." Kyla nodded. "Why is a Shadowhunter hanging around with a pack?"

Kyla sat on Scott's desk chair and turned it to face him. "My friends are in it for one," she said simply. "Second, well, you've noticed I smell different. thanks to my moms side of the family, lots of monsters catch that scent and think 'lunch'. That's why you chased me this morning. Being in a werewolf back blocks that scent a bit. It's good protection."

He frowned. "What's on your mother's side of the family?"

"Something a bit more dangerous than Shadowhunters," she said. "Or Nephilim. It's a bit of along story and I'm going to need something to drink before I tell it," she stood. "Do you want anything?" he shook his head and Kyla nodded. "Okay, I'll be back in a moment."

Like most things, that didn't work out according to plan. Instead Kyla ended up securely locked and barricaded inside the McCall's bathroom and ended up doing a perfectly executed triple flip out the bathroom window. If a gymnastics judge had been there, she'd have gotten high points.

Locking in on Derek, she managed to track him to the school and skidded to a stop, almost colliding with Peter's white V-neck wearing chest as he ran up a set of stairs. The werewolf simply grabbed her arm and began dragging her in the opposite direction of where she had been going. "Kate brought Berserkers," he said by way of explanation. "They will flatten our skulls and I prefer mine three dimensional."

Being unable to argue with that line of reasoning Kyla allowed Peter to tow her along. She had heard of Berserkers several times before and done research on them after hearing Chris Argent talk about having to kill one. "Bad" didn't come close to covering them.

She and Peter rounded the corner at the entrance to the school and Peter tugged her down a set of stairs sunk into the pavement under the high school sign that Kyla could swear weren't there during regular school hours. As best she could tell, what they were in was a vault. A really big fancy one. Peter stopped cold and gestured fro Kyla to remain silent.

Kate and Derek were standing in the middle of the room. Derek was holding a box and Kate was examining a small pendant with a triple spiral carved in to it. "This is it?" she said a bit skeptically your sure?"

"Yeah," Derek said with a touch of annoyance.

Kate frowned. "It doesn't look like much."

"That's because it isn't," Peter said, entering dramatically down another set of stairs with a stream of bluish light behind him. Kyla crept out as well but stayed behind him. If Kate went all werejaguar on them she was more than willing to let Peter be target numero uno. "It's quite an elaborate scheme you have here Kate," he commented, moving confidently through the vault towards Kate. "Two countries, Aztec temples, Derek returned to a teenager. One that trusted you," he paused for effect. "One that loved you."

Kyla paused momentarily. It was taking her brain a minute to absorb that particular bullet of information. She sure was learning a lot about Derek's ex-girlfriends today. If you added in the Darach the pattern seemed to be dead, sociopath, sociopath. That didn't say wonderful things about where she might be headed. The only one who looked like he was having more trouble with this situation than her was Derek. Reasonable, after all, the last time he had seen Peter or Kate they had both been a minimum of about five years younger.

"All this complication just to get in to our vault," Peter continued. "Just to get your hands on that little piece of junk. Turn it over go ahead," he said confidently as he got within arms reach of Kate ad her murderous stare. "There' a scraped on the back where it used to say made in China."

Kate raised her head and glared even harder. If looks could kill Peter would have been six feet under. "Your lying."

Peter held up his hands. "I'll admit I might have a slight tendency to over exaggerate a little bit, but in this case the truth is so much more fun." That was something Kyla could believe. Peter was like the one of the fairfolk. Tell the truth with a twist always unless being completely honest would hurt more. "I'm sorry sweetheart," Peter said with mock sympathy. "That little pendant is just a physical object to focus on it's training wheels. Talia used it to teach Laura, and I tried to use it to teach Derek."

A roar sounded and Peter and Derek's head both shot up. Derek's eyes flashed blue as his body responded to his Alpha's call for help. Kate grabbed his shirt. "Is it true?" she demanded. "Is this real?" she shook the triskele.

Derek just searched around panickedly, his eyes settled on Kyla. "That was Scott! I just heard Scott! I have to help-"

"Tell me!" Kate shrieked, her voice taking on an inhuman quality.

With a quick shove, Derek broke free of Kate. "I don't know and I don't care!" he shouted at her, sprinting for the stairs. He grabbed Kyla by the elbow as he went, pulling her out of the vault. Kyla sprinted to keep pace with him. His legs were a whole lot longer than hers. Being able to get away from him in the woods this morning had been a miracle. On reflection she realized she was doing a lot of getting dragged around by the Hale men that night. Oh well.

Now, normally running straight at two berserkers was a similar level on the bad idea scale as trying to play fetch with a hell hound that wasn't Mrs. Oleary, or deciding that walking from the fairy realm in to a hell dimension was the right thing to do. But when you actually do really stupid things, only a very small portion of your brain is actually telling you it's a stupid thing to do.

Kyla launched in to fighting beside Derek. She abandoned her bow and instead pressed the charm on her bracelets. Two wickedly sharp bronze hunting knives sprang in to her hands. It was an incredible experience really. Partner fighting was a bit like dancing. The more in tune you were with your partner the better it would go, and the more practice you had together the better. That was why most Parabatai picked their partners when they were twelve or thirteen. Fighting with Derek was like dancing. Effortless and simple. Time seemed to slow down like she had forever to plan her movements. It was almost like it had been choreographed.

Derek used a selection of krav maga that Kyla didn't know he possessed and she applied gymnastics to flip ad turn in deadly and unpredictable arcs. Dimly she realized that Derek's body seemed to be flickering. His teenaged self seemed to be rippling and vanishing in to the Derek she knew. The longer the fight went on the more he seemed to change. His height increased by a good six inches, his chest morphed and expanded to fill his green t-shirt o that the fabric was stretched snugly across his muscles. It was like watching a sped up growth film.

Suddenly his hands closed around her waist, lifting her up and launching her so that she could get a hit in at the Berserkers' heads. She landed by bending her knees and rolling when she hit the ground. When she looked up she found that the creatures had run. The skin over her hips was burning and looking down Kyla found that there were five holes ripped straight through her jeans and in to her skin. When Derek had grabbed her his claws had been out.

The newly human hands were closing around her sides and lifting her up off the ground. She found herself on her feet facing a newly adult Derek. His hands were clenching and unclenching around her waist. Kyla felt the edges of claws digging in to her skin, puncturing the fabric in different places. Derek's head was down and she thought his eyes were shut. He was holding her just slightly closer than arms length, close enough the Kyla could feel his body heat.

"Derek?" she asked tentatively. "Are you grown up you again?"

He lifted his head, eyes still shut tight and nodded. Then his eye lids flicked open and Kyla momentarily paused. Instead of deep husky colored blue, Derek's eyes were a shining amber gold. "Okay we can deal with that later," she mumbled. Then she threw her arms around his neck. After a moment, Derek's arms came up and crushed her in to his chest. She could feel herself being lifted up on to her toes as Derek pressed his head against the small gap where her neck met her shoulder. "Your alive," Kyla repeated. "Thank gods your alive."

Slowly Derek pulled back. His eyes were still burning gold. "Yeah," he said hoarsely. He was staring at her, just taking her in. "Yeah I'm alive."

A/N: Hey guys. Sorry about the longer wait on this chapter. There was just so much more to put in! How did I do here? It's my longest chapter yet. Next chapter will pick up after the events of 4x02 and carry threw 4x03. I'm thinking some making out might be good here yes? Tell me what you think! Review for me!

xoxoxoxoxoxoxooxxxooxoxoxoxoxoxoxoxoxooxoxooxoxxoxoxoxoxoxoxoxoxoxooxxooxoxxoxoxoxoxooxoxxooxoxoxoxoxoxoxoxoxoxooxxoxoxoxoxo