Disclaimer: I do not own Teen Wolf. I also have no claim on any pop culture references that I may use throughout my writings. I only own my OCs. Enjoy the read.

321 ~ 3849

Spencer and Lydia must have spent an hour trying to argue with the teacher that she had met this morning. The one she'd seen "reuniting" with Derek. Spencer's blood boiled just looking at the woman's face. The fact that the teacher wasn't doing anything or even trying to believe what she and Lydia were saying made Spencer hate her all the more.

Finally, they were able to leave and Spencer began the trek to Lydia's house in her car. Lydia seemed too shaken up to drive, so Spencer volunteered. As they pulled out of the parking lot, they got a call from Stiles.

"Allison says it's philosophers this time. So like teachers." Stiles explained.

"Alright. So what's happening then? What are we doing to try and stop it?" Spencer questioned.

"Scott's at the school right now. All the teachers should be there because it's the memorial recital tonight. He can stop anyone from being taken."

"Okay. What are you doing? How's Cora?"

"Not great. We're at the hospital right now."

"What?" Lydia questioned, glancing at Spencer. "Why?"

"Oh, cool. I'm on speakerphone. You know it's only polite to warn a guy. I could have gone completely off the book talking to you, Spence." Stiles sassed.

"Stiles!" Both girls said exasperatedly.

"Right. Sorry, well, Cora wasn't healing."

"So, you took her to the hospital?" Spencer asked, "She's a werewolf, genius. She can't be there."

"Aiden hit her really hard, okay? She passed out in my room which you think would be a good thing, but it's not a good thing. It's a very, very bad thing."

Spencer rolled her eyes. "Alright, enough of that."

Stiles sighed. "We were trying to explain to Dad about everything and she just collapsed. So he's the real reason we're here. I didn't know what to do."

"And you told him that she was a werewolf?"

"I tried. He didn't believe me."

"He'll believe me, Stiles. Even if I have to shift in front of him. He'll just have to." Spencer sighed. "Give me, like, ten minutes. I'm dropping Lydia off at her house and I'll be right there."

"Okay."

"And call Derek. Tell him about Cora. He needs to be with her." Spencer hung up the phone without another word. She looked over at Lydia, who looked like a frozen statue in her seat. "Are you okay?"

"We have to go back to the school." Lydia insisted.

Spencer furrowed her brow. "Why?"

"Just go. Please."

"Is this part of your thing?"

Lydia nodded, looking at her. "I think so."

Spencer checked behind her before doing a U-Turn in the middle of the road. "Text Stiles. Tell him about the change in plans. Let's hope that we don't just find a body." Spencer drove recklessly back to the school. She parked right in front of the entrance to the auditorium and they snuck in through the doors. The pair found Scott, standing by the doors as if he were guarding them.

"I thought you were going home," Scott said, in confusion.

"I can't," Lydia whispered.

"We got halfway there and she told me to turn around."

Scott's brow furrowed and his eyes flashed between his two friends.

"I don't know why I'm the one that keeps finding the bodies, but maybe if I just stopped trying to fight it…" Lydia shook her head, "I'd find them before it happens. Maybe with enough time for someone like you guys to do something about it."

"You get me the time, and I'll do something about it. I swear to God, I will." Scott promised.

Lydia turned to Spencer.

"I wouldn't be here now if I didn't believe in you, Lydia," Spencer assured.

Lydia showed a small smile and nodded.

Spencer sighed. "Look, we're here now. So I'll help keep watch. You stay here at this door." She said to Scott. "I'll get that one over there." Spencer gestured to the door on the other side of the auditorium. "At least this way there are fewer exits."

"Sounds good." Scott agreed.

"Stay with Scott?" Spencer asked, turning to Lydia.

Lydia gave her a nod, which Spencer returned before going to her spot in front of the far auditorium door. She stood there, looking around at all of her former classmates and teachers. Ethan was giving Danny a small pep talk before the concert began and Spencer smiled. She wasn't really trustful of the twins, but Ethan seemed to be okay. Plus, it had been a while since she'd seen Danny happy.

The band sat in their chairs and began to play. It was a soft, somber melody that seemed somewhat peaceful. Spencer paused in surprise when the door behind Scott opened. She watched as Chris Argent walked in, followed by Allison and Isaac. Spencer furrowed her brow at the sight of Isaac with Allison and made sure that he saw her face.

Isaac ignored Spencer, turning his head away from her.

Shortly after that, Stiles came in, pushing around people to get to Scott. He saw her across the room and showed a small wave.

Spencer smiled at him, before turning back to the band. The music has quickly begun to pick up the tempo. The theme went from somber to creepy really quick. Then the students started chanting. "Oh, shit." She whispered, widening her eyes in realization. "Scott, this is it."

Scott's eyes landed on the redhead with a furrowed brow.

"There was a recorder left when the band teacher was taken. It had a recording on it. This recording. The chanting."

Scott quickly recognized it after being told. He turned his head, trying to find Lydia.

"Scott, where is Lydia?" Spencer asked, starting to push her way back to her friends.

"I don't know." Scott insisted. "She was right there, I swear."

"What's wrong?" Stiles questioned, not having the super-hearing to have heard Spencer's side of the conversation.

"Lydia. She's missing. This is the chanting that was recorded when the band teacher was abducted." Spencer filled in.

"Shit." Stiles cursed, pushing his way out of the auditorium. The three of the friends burst through the doors. "Lydia?" Stiles called.

"Lydia!" Scott shouted upon exiting.

Spencer sniffed the air.

"Anything?" Stiles asked, looking at her then looking at his phone.

"I can't smell anything." Spencer shook her head. "I should be able to. I was just with her. But there's nothing."

"She's not answering texts, either."

"Okay, let's not panic. She can't be far, right?" Spencer stepped up next to Scott. "Do you see anything?" She asked, knowing he had better sight than she did.

Scott shook his head.

"What do we do?" Stiles asked, not receiving an answer. "Scott?"

"Listen, we promised her we'd figure it out before we lost someone else. So, that's what we have to do." Spencer reasoned. "We check all the buildings. If we get close enough, we should be able to hear something over the band, right?"

At that moment, there was a loud piercing scream.

Spencer groaned in pain, covering her ears and falling to her knees. Her ears burned at the sound, having not quite healed from being so close to Lydia when she last screamed. Finally, the screaming stopped. Spencer takes her hands away from her ears and sees blood.

"Holy shit, are you okay?" Stiles asked, crouching down to her.

"I'm okay. That was Lydia." Spencer said, wiping the blood on her jeans. "She's still here."

"Scott's already gone."

"Which way did he go?"

Stiles pointed. "English building."

Spencer pushed herself onto her two feet and started to run in that direction. They burst through the building doors. Spencer could sense Scott, hearing the grunts as he fought with someone. She led Stiles to one of the first open classrooms. Inside, they saw Lydia tied up with the brunette teacher standing next to her. That woman just kept popping up.

The teacher noticed Spencer and Stiles standing outside the door. She gave the desk a tap and it pushed itself against the door, shutting it and keeping it closed.

Spencer and Stiles panic and both try to get the door open.

"There was a girl… Years ago."

"Oh, fuck," Spencer said, before frantically turning the knob and pushing on the door. "Shit, no, no, no!"

"Spencer?" Stiles asked. "What's wrong?"

"It's Pops. He's in there with them."

Stiles' eyes widened and he aided Spencer in getting the door open all the more.

"Let us in, you bitch!" Spencer shouted. Her heart beat loudly in her chest. She couldn't lose that man. She wouldn't. "Okay, hold on." Spencer paused. "Stiles, step back."

"Spencer, my dad!"

"I know! But I don't want to hurt you!" Spencer shouted back at him.

Stiles took a step away from the door, watching Spencer.

Spencer closed her eyes and channeled her wolf. She took in deep breaths, feeling the fangs grow in place of her canines. Spencer growled, balling up her fists and taking a couple of steps away from the door. She roared and then charged the door, pushing hard enough against it to move the desk with it. Spencer and Stiles managed to wedge themselves inside, but it seemed to be too late.

The sheriff was nowhere in sight and neither was the teacher.

Still in her wolf form, Spencer couldn't seem to calm it down. She was breathing so hard that her breaths were coming out more like low growls. She squeezed her claws deep into the palms of her hands to get the shift back, but it wasn't working. Spencer turned around, ignoring both Scott and Stiles staring at her. She used a claw to tear off the tape that was bound around Lydia's wrists.

"Spencer?" Lydia questioned. "Are you okay?"

"Text Allison," Spencer said through clenched teeth. "Only Allison. Tell her where you are and to get you out of here." She turned back towards the door and made her way to it. Spencer grabbed the desk, not bothering to be gentle with it and flung it hard against the wall, cracking the wood.

"Spencer!" Scott called after her.

Spencer ignored her best friend, exiting the school building. Not even bothering with the heavy storm that was brewing, Spencer broke into a hard run. She was angry. Angry that the man who was the only father she'd ever had was missing. Angry that her friend had been attacked. And furious that the person behind all of it had been the woman she'd seen kissing Derek hours earlier. Putting all of that information together, just made her mood even worse. Spencer ran faster, using her arms to run. She could hear Scott gaining on her, but she didn't care.

Spencer sped to the industrial district and used the fire escape to get into the loft. "Derek!" She shouted, not bothering to close the door behind her. Spencer smelled the recently turned off water and went upstairs. She found him, having just showered. Spencer growled deeply and charged him, pushing him roughly against the nearby wall.

"Spencer!" Derek chastised. He was confused at the sight of Spencer, all wolfed out, showing up and attacking him.

Spencer gave him another push, tearing at his shirt slightly with her claws. When she drew back, she felt hands grab her and pull her away from Derek. "Scott, let me go!"

"What the hell is wrong with you!?" Derek shouted.

"How long have you been screwing her!?"

"What?" The alpha said with a furrowed brow.

"The teacher!" Spencer screamed. "How long have you been fucking that bitch teacher?!"

Stiles must have raced in his jeep to Derek's loft because he showed up then, taking in the sight of Scott holding Spencer back from Derek. Foolishly, he put himself between Derek and Spencer. "Hey." He said, putting his hands in front of him. "Let's calm down, okay?"

Spencer growled and tried to lunge for Derek again, but Scott's hold on her was strong.

Derek, still confused, lightly pushed Stiles out of the line of fire. "Will one of you tell me what the hell is going on?"

"It's her!" Spencer yelled. "The teacher you visited today. Had a very romantic reunion." Spencer sniffled, the despair finally worming its way in. "She's the one taking people. She's the one killing people!"

"What?" Derek questioned, looking to Scott and Stiles.

"Ms. Blake," Stiles said gravely. "She's the Darach."

Spencer looked up at him, seeing the shock on his face. She was slowly being able to slip back into her humanity. "She's the one who kidnapped Doctor Deaton and nearly killed him. And she actually killed Heather. And Tara. And…" Spencer stopped, unsure she could say the words.

"She took the Sheriff." Scott finished. He felt Spencer let out a sob and released his hard grip.

"She took Pops." Spencer cried, tears welling up in her eyes.

"Hey," Derek said, softly. He stepped forward and wrapped his arms around her shoulders. "Hey, it's okay. We're gonna get him back." Derek looked up at Stiles, whose eyes were watery. "We're gonna get him back."

Spencer wasn't really crying. She was just frustrated and felt like things were falling apart all around her. Being hugged by Derek, though, made her feel like everything would be okay.

"How?" Stiles asked.

Derek sighed. "She's coming here."

"What, now?"

Spencer slowly pushed herself out of Derek's hold, taken aback by his words.

"Yeah," Derek admitted, eyes locking with Spencer. "She said she needed to tell me something."

"Well, of course, she did. Her fucking secret's out." Spencer said, wiping her eyes on her sleeves. "She has to start finding ways to cover her ass."

"We let her come." Scott insisted. "We'll let her get caught in whatever lie she tries to tell Derek, but then we tell her how it really is."

Spencer furrowed her brow. Now that she had calmed down, she was able to think about what actually happened back at the school. Spencer turned to Scott. "What was Pops telling her in the classroom?"

"Something about a girl he'd found in the woods a long time ago. Her face and body were slashed. He thought it was her." Scott remembered.

"So, what she looks like right now, might not be what she actually looks like?"

Stiles groaned. "I don't even kind of want to know what that means."

Scott shrugged. "I guess not."

"We've got her." Spencer pushed around Derek and entered what used to be her room. The others followed her as she went into the closet. A lot of her stuff was still hidden deep inside it. Derek didn't know about her secret stash when he'd packed up her room for her. "The only way we're going to be able to prove that she's not who she says she is..." She paused, finding the box of herbs she had stored in the tiny crawl space between the walls. Spencer found what she was looking for and pulled it out of the box. "Is with this." She handed the vial to Scott.

Scott's eyes lit up in recognition.

"What is that?" Stiles asked.

Spencer smirked. "It's a good thing Derek doesn't know all my tricks or we wouldn't have that."

"Well, I know now." Derek insisted.

"Nah, I'll find a new hiding spot." Spencer waved him off. "I can't have you going through my things."

"This is my loft."

"Technically." Spencer made a face at him. "When she gets here, Derek, keep her talking. We'll be behind the brick wall, catch her in her lie, and kill her." She said with a sweet smile.

"We can't just kill her." Scott reasoned.

"Why not?"

"She's got the Sheriff."

"Well, sure. So, we catch her in her lie, torture her until she tells us where he is, and then we kill her." Spencer shrugged.

Derek laughed at her.

"We're not killing anybody." Stiles insisted.

"She's killed so many people!" Spencer reasoned. "Derek, c'mon, you've at least got to be on my side about this."

"Don't pull me into this," Derek said.

"You're telling me that you don't want the evil druid who lied to you about who she really was and who was killing people all the while holding up this bitchy facade to die a painful death?" Spencer asked, raising a brow at him. "Also, before you answer, may I remind you that this is the second woman to do this to you?"

Derek narrowed his eyes at the girl and thought for a moment. "You're right she needs to die."

"We can't," Scott said. "If we do, we're just sinking as low as her."

Spencer groaned. "We'll see." The girl pushed around the boys and made her way downstairs. "The elevator's moving. We should get downstairs."

"That's your fault," Stiles said behind Spencer's back.

"No, it's not," Derek said with certainty.

"I can still hear you!" Spencer shouted from the stairs.

The three guys joined Spencer downstairs, Scott and Stiles going with her behind the broken brick wall on the right side of the apartment. Spencer waited at the edge of the wall, leaning against it as she heard the elevator stop and the giant door slide open.

"Derek?" The teacher called. "Derek, where are you?"

Derek's steps sounded on the spiral stairs as he stepped down. "Right here."

"Thank God!" Blake sighed, flinging herself around Derek. It took everything in Spencer not to growl at her. "Something happened at the recital, at the school, okay? I need to tell you before you hear it. Before you hear it from any of them." She seemed hurried, panicked.

"From who?"

"Scott. Stiles. That redhead, whoever she is."

Spencer smirked as she sensed the frustration that came from the teacher when she was talking about her.

"They're gonna tell you things," Blake said. "Things you can't believe. You have to trust me, okay?"

"What is it?" Derek asked with a monotone.

"Promise you'll listen to me."

Spencer turned her head slightly to glance around the wall.

Derek nodded. "I promise." His eyes met Spencer's for the briefest of seconds before the teacher leaned in, kissing him.

Spencer clenched her fist, nails digging into her palms.

Blake held Derek for a second before pulling away slowly. "They're already here, aren't they?" she asked angrily.

Derek looked to Spencer again, and she rounded the edge of the wall. Scott and Stiles followed her, cornering Ms. Blake in the loft.

Spencer stopped a few steps behind Ms. Blake and crossed her arms over her chest. "Hey there." She said, snarkily.

The teacher glared at Spencer. "So, they told you it was me?" She looked at Derek. "That I'm the one taking people?"

"We told him you're the one killing people." Scott corrected.

Blake scoffed, turning to Scott. "Oh, that's right." She chuckled. "Committing human sacrifices? What, cutting their throats? Yeah, I probably do it on my lunch hour, that way I can get back to teaching high school English the rest of the day. Makes perfect sense." Blake looked in disbelief at Derek.

"You're spiraling, honey." Spencer jabbed. "You may as well just tell us the truth."

Blake sighed angrily at Spencer.

"Where's my dad?" Stiles asked, his voice wavering.

"How should I know?" Blake questioned with a furrowed brow. "Derek, tell me you don't believe this." She looked at Derek and begged.

Derek looked around Blake to Stiles and met Spencer's eyes again.

Spencer nodded at him. She felt bad for Derek and everything that he'd been through, especially with Ms. Blake. Spencer knew he didn't want to believe that he fell for another murderous bitch, but she would be there for him when it all spiraled down.

Derek looked back at Blake. "Do you know what happened to Stiles' father?"

"No!" Blake insisted.

"Ask her why she almost killed Lydia." Scott pressed.

"Lydia Martin?" Blake asked Scott. "I don't know anything about that!"

"What do you know?" Derek stressed.

"I know that these children, for whatever misguided reason, are filling your head with an absurd story. And, one they can't prove, by the way."

"And what if we can?" Spencer asked, satisfied by the coming outcome of this conversation. She'd gained Blake's attention, and Spencer looked back at Scott.

Scott held up the vial Spencer had given him minutes before.

"What is that?" Blake asked, the tone of her voice changing from confident to scared.

"My boss told me it's a poison and a cure," Scott took a couple of steps forward, unscrewing the cap.

Derek and Spencer backed away from Jennifer, joining each other's side and giving Scott a clear shot.

"Which means you can use it," Scott continued, "And it can be used against you."

Blake snarled. "Mistletoe?"

Scott threw the powder at the teacher, who ended up changing right before their eyes when the powder hit her. In front of them, a cloud of smoke appeared, but also, the truth. A scratched up, disfigured woman faded in and out with Ms. Blake before it showed the teacher again.

"Can't lie about that, can you?" Spencer asked rhetorically.

Blake tried to run away, but Derek quickly caught her by the throat, unleashing the claws in his other hand. "Derek, wait!" She begged, gasping for air. "Wait! You need me!"

"What are you?" Derek asked through clenched teeth.

"The only person who can save your sister."

Spencer furrowed her brow angrily, stepping up to Blake, feeling her wolf side start to come out. "Are you the reason Cora's in the hospital?"

"Call Peter." Blake insisted, Spencer stewing on the words for a moment. "Call him!"

Spencer took a step back and pulled out her phone, clicking on Peter's contact.

"Can't talk, Princess," Peter said through the speakerphone.

"Tell me how Cora's doing."

"It's not good. She's in and out of consciousness." Peter explained. "She's vomiting up black blood, along with one other alarming substance."

"Mistletoe."

"How did you know that?"

"Call you back," Spencer said, knowing she wouldn't, and hung up the phone. She got in Blake's face again. "What the fuck did you do to Cora?" Spencer glanced at Derek.

Derek tightened his grip on Blake's throat and she struggled against it.

"Derek…" Scott warned, knowing he was dangerously close to killing Blake. "Derek, what are you doing?"

Blake gasped. "Her life… It's in my hands!"

Derek lifted Blake off of the floor, still holding her neck tightly.

"Stop!" Stiles shouted. "Derek, stop!"

Recognition came to Blake's eyes. "Stilinski. You'll never find him."

Spencer narrowed her eyes, hating that they were caught in this web. They had to keep her alive until they got the information that they needed. "Derek, let her go."

Derek looked down at Spencer, fighting with himself at this point. Killing Blake would give Derek his own sense of satisfaction, but Spencer was right. They needed Blake alive.

Blake fell to the floor as Derek let her go. She chuckled. "That's right. You need me." She turned to Scott and Stiles. "All of you."

Spencer groaned, took a quick step forward, and without thinking about it, lifted her knee into Blake's face hard. "Heal that, bitch."