A/N:

Hello Teen Wolf Fandom! This story does involve some OC's, so I apologize in advance for those of you who don't like OC's.

It takes place where we are right now: Season 3B. But Derek's not gone. Not really sure on pairings yet either. I ship Sterek, but I'm not sure if that's completely applicable to the plot I have in mind. Don't worry; I'll probably write some Sterek fluff some other time.

Anyways, I don't own Teen Wolf, and here's I've Been!

3:00 a.m. in the Stilinski household. In one bedroom, a Sheriff is enjoying the few hours of sleep he can get. In the messy room across the hall, a teenage boy sits and stares with tired eyes at a glowing laptop screen. He occasionally takes a sip from his Redbull, the fourth of the night. He's got other books strewn on the desk in front of him, and he glances from the screen to the old books to his Redbull. To others he would seem like a mess, but it's like this every night. It's been like this every night since he sacrificed his life to save his father's….and come back to life. His dreams were plagued with darkness and fear and memories. So Stiles Stilinski decided not to sleep for as long as he could help it.

Of course, his plan usually faltered by about 4:00 in the morning, and he'd end up passed out at his desk. If he was lucky, he'd make it back to his bed before crashing. But his peaceful slumber never lasted for long. Once his eyes closed, the nightmare began. The darkness of his memories infiltrated his mind, filling his head with fear and terror. At about 4:17 he'd begin screaming. Seconds later his father would run into the room and cradle his son in his arms. It hurt John Stilinski to see his son suffering like this, hell, it scared him half to death to hear his son scream every night. By 4:30 everything would be okay again. Stiles would either be awake or would return to sleep, his nightmares already past their peak for the night.

But not tonight. Tonight he was interrupted by a nearly silent man entering through his window. Stiles only knew the older man was there by the soft creak his window made when opened. He raised a hand to recognize the man's presence, but he didn't say a word. His eyes skimmed over lines and lines of jumbled words that he couldn't read anymore. Like he was in another dream.

"Stiles," the man spoke softly, carefully almost. He knew Stiles had been on edge ever since he sacrificed himself a month or so ago. He wouldn't be the one to break him. Stiles didn't respond, and Derek sighed. "Stiles, I need you to listen to me." He attempted again. The skinny insomniac turned around in his spinny chair to face the werewolf.

"Listening, Sourwolf." He replied in a voice a little too monotone for Derek's liking. Monotone was his job, after all.

"You're going to school tomorrow, right?"

"Why wouldn't I be?"

"I need you to tell Scott to keep an eye out for any new scents." He continued, ignoring Stiles' question. Stiles raised an eyebrow.

"New scents? Like what, the latest perfume from Macy's or something? You're gonna have to elaborate." He asked, getting back to his comical tone.

"There's something else supernatural around. Not a werewolf." Derek stated as if it were obvious. Stiles rolled his eyes.

"Sure, I'll let Scott know." He replied, turning off his computer and taking one last sip of his Redbull. Derek was put off by this. Usually the boy put up more of a fight. Tonight he just….agreed. "Look, I'm gonna try to get some sleep before I have to wake up in like," he checked the clock, "Three and a half hours. So, I'd appreciate it if you just climbed back out my window."

Derek nodded, but he didn't like this cold version of Stiles. He wasn't comedic, or hyper, or even annoying. He was tired, and stressed. But Derek respected the teen, and headed back out the window of which he came.

Soon after Derek left, the nightmares began. Stiles didn't know his dreams from reality, and his tossing and turning soon turned into screaming. The Sheriff rushed in as he always did.

Derek listened to Stiles' heartbeat from the roof of the Stilinski household. He listened to the rapid breathing, he felt the pure fear radiating off of the boy. Once the Sheriff seemed to have things under control, Derek left. He headed back to his house, where a smirking Peter waited for him.

"You smell like energy drinks and teenager, nephew." The older man teased. Derek grunted in response before sitting down with the Bestiary open in front of him.

"I don't know what the scent is, but it's strong." Derek stated, flipping through pages. "But it's something supernatural, and I'm not putting my pack in danger again."

"Then follow the scent; track it yourself." Peter suggested.

"I've let the pack know so they can keep an eye out for things out of the ordinary. We're not making the first move until we have to."

"And when will that be?"

"When we know who and what they are and if they are a threat to us." Derek said, his book slamming shut with rage.

"No need to get aggressive, nephew. I was merely curious as to your…thought process." Peter said with another smirk.

Derek grunted in response yet again, opening the book up to where he left off. He skimmed through pages as fast as he could, trying to find the thing he was looking for. He had caught their scent. It wasn't like a wolf's. It was brighter, more colorful. It wasn't musky or subdued, but it was subtle. Whoever's scent it was, they certainly knew how to mask most of it.

"Are you going to bed anytime soon? Your concentration is wearing me out."

Derek shook his head and continued reading. His head was already starting to hurt, and he wondered how Stiles could do this for hours on end.

"Suit yourself, nephew. I'm going to relax while you continue to stress over a bit of perfume." Peter sighed, heading to another room.

The younger man sighed and shut the book. Peter was right. He wasn't getting anywhere, not when his mind was as frazzled as it was tonight.

On the other side of town, a pair of twins raced through the streets towards a new scent they had caught. They knew it was something supernatural, and they knew it was possibly something dangerous. Ethan and Aiden were ready to face it, no matter the consequences.

They were a little disappointed when their noses led them to a plain house at the end of a cul de sac. It was just like all the other houses on the block, nothing different about it. The lights were all off, considering the time of night it was, and whatever presences they sensed were all asleep.

"It was worth a shot." Ethan shrugged, turning around again to head home.

"I bet some chick just wore too much perfume." Aiden muttered, turning around as well. Though he wasn't entirely convinced.

As the boys walked away and made some small talk, a girl watched them from a window of the second story. Her gaze only broke when they were out of sight. She turned around to her mother with a serious look.

"They know we're here."

End Note: Ah guys let me know how you like this so far! I'll introduce the OC's more next chapter, but I hope this is enough to get you hooked! Reviews, good or bad, would be appreciated. Follow or favorite! :)