A/N: I've been getting some nice positive feeback for my Sterek fic, and it gave me the confidence to write this! Strongly inspired by the Demon!Stiles gifs that have been going around tumblr (particularly those by psychic-drips). I have a full outline for this (handwritten even! I also hand wrote this chapter before typing it up), so I WILL be finishing it. I already know everything that happens, and that's half the battle anyway, right?

Hope you like it! 3


Te Rogamus, Audi Nos

Stiles stretches the rubber band back, taut between his thumb and forefinger. He takes his aim carefully, and…ping!

Bingo. Jackson turns around to glare daggers in his direction and Stiles puts on his best angelic 'who, me?' face. Jackson obviously isn't buying it, but it's not like there's much he can do; Stiles is pretty sure that a restraining order doesn't apply to rubber bands.

Finally Jackson turns back around, grumbling. Stiles sighs and rubs the back of his head. Detention is seriously boring. Maybe it wouldn't be so bad if they were allowed to read the books instead of just re-shelving them, and what kind of 'learning' experience is that anyway?

Glancing around for something to distract him, Stiles catches Erica's eye and she winks at him. He smiles a half-smile and turns away. Frankly she's never paid much attention to him before, and while she's definitely pretty and actually kind of cool when she's not trying to kill Lydia…well, maybe being around so many supernatural creatures has finally started to make him a little more suspicious, because he's not really taking her motives at face value.

Scott and Allison are making out the next aisle over, and voyeurism isn't exactly the sort of distraction Stiles is looking for at the moment. Isaac is nowhere to be seen, and Jackson…well, Jackson is more likely to werelizard-out at him and wreak some havoc than he is to engage in some refreshingly witty banter.

Stiles does a quick survey of the ceiling just to make sure that Jackson isn't chilling out in the rafters waiting to drop down on him, but instead all he sees is a wisp of weirdly black smoke lingering by the skylight.

Huh. That's strange.

"Hey, guys?" Stiles pokes his head around the bookshelf and attempts to pry Scott off of Allison.

"Not to break up the slobbering-all-over-each-other thing, but I think the school might be on fire". That separates them pretty effectively, and Stiles files it away for future use.

"Are you sure?", Scott says, hands lingering on Allison's waits, and it's obvious that he really wants Stiles to be wrong so that he can continue with the slobbering. It's actually a little bit endearing.

But as they all turn to look at where Stiles is pointing, it becomes evident that something is very, very wrong.

The smoke has seeped in through the window, but it's not spreading out. In fact, it's not moving at all, just…floating there in a clump. Stiles glimpses Erica peeking out from behind another stack. She looks over at him, says, "What the…"

And that's when all hell breaks loose.


Derek is sitting on the floor of the rail car drawing up some new training schemas when he gets the call. It's Erica, and immediately, before even picking up the phone, he knows something is seriously wrong.

"What is it?" he barks into the receiver. He's already shrugging on his jacket and grabbing the keys to the Camaro.

Erica's voice is shaking, hard, but she manages to get out a whispered description. "It looks like a black cloud of smoke, but if felt…alive, like it was looking at us. We split up, ran. We're at the school. I don't know who it went after, not me".

"I'm on my way. Stay where you are. I'm going to hang up, okay?" He tries to say it gently, tries to belie the way that worry's creeping up into his lungs.

"Okay. Derek?" "Yeah?" "One more thing…it stunk". "It stunk? Like what?" "Like…sulphur", she whispers.

Shit. Suddenly, Derek knows exactly what they're dealing with.

He drives faster.


Stiles is breathing heavy but trying not to. Who knows what kind of crazy supernatural powers this thing has? He's willing to bet that super-hearing is one of them. He presses further back into his corner.

When the cloud had started, terrifyingly fast and screeching, towards them they had all scattered. Stiles had ended up here, in the nurse's station. He has no idea what that thing was, but he's willing to bet it falls into the no-good-very-bad category.

Someone should call Derek, he thinks. Stiles isn't sure what he expects Derek to do, but calling him is really the best and only idea he has right now.

A shadow passes the fogged window of the nurse's station, and the lights suddenly flicker on and then off again. Stiles' fingers shake as he presses speed dial number 5 and holds the phone to his ear.

Derek picks up on the second ring. "Stiles, where are you?" "In the nurse's station. Derek, there's a…" "I know", Derek cuts him off brusquely. "Just stay where you are and try to keep calm. I'm on my way".

But Stiles can't keep calm, not when there's black smoke filtering in from under the door.

"Derek" he hisses. "Stiles? Stiles, are you okay? What's happening?"

Stiles is panicking, he can feel himself panicking, and shit, it's almost all through the door now, and the stench is overwhelming. The lights flicker wildly, electronics are beeping and buzzing and shaking, and oh hell, it's coming towards him. Stiles is frozen in place. Dimly, he hears Derek through the phone.

"Stiles, answer me, damn it, are you okay?" "It's here", he whispers back, and then it's on him, in his mouth and it tastes like fire and brimstone, and why the hell does he know what brimstone tastes like? And then there's pain, mind crushing, black-out pain, but he's not blacking out, even though it feels like he's fainting, like he's being pushed back further into his own body.

He's screaming bloody murder, he can hear himself, but he seems to have no control over stopping it. The pain has lessened and now things are mostly…fuzzy. He can see, but it's like looking through a long, dark tunnel and he can feel, vaguely, as his body rolls his shoulders and stretches without his permission. Like he's possessed, and shit, was that black cloud a demon?

Fear ripples through him and he hears a voice in his head laugh with malicious glee. Then he realizes that's not all he can hear; he can still hear Derek, screaming his name through the phone.

Derek. Derek will save him.

The voice laughs. "Oh, you want big, buff, and handsome to save you from the voice inside your head, do you?"

Suddenly Stiles wishes very, very hard for Derek to just turn around and run in the opposite direction.

"Too late now!", the voice cackles, and then Stiles can feel his throat working, hear his own voice, but scratchier, lower, as he says into the phone, "If you want him back, you'd better come and get him". The line is silent, and then suddenly they can hear Derek swearing a blue streak, voice changing in a way that Stiles knows means he's wolfing out, and he's shouting threats through the phone. The last thing Stiles hears him say is "if you fucking hurt him so help me, I will rip…" and then the thing controlling him, the demon, shuts off his phone.

"Passionate little boyfriend you've got there", it purrs, and Stiles recoils in his own mind. "Oh ho ho, strike a chord there, did I?" And all at once there's pain, the sharpest pain he's ever felt, and it's slicing through his brain. Just as quickly as it came, it's gone.

"Ahh, so NOT the boyfriend. But you wouldn't exactly mind, would you? No, don't answer, all those lovely fantasies and poems about his eyes speak for themselves", and what the heck, Stiles has definitely never written poetry about Derek's eyes. The rest, however…

Stiles wishes Derek away with all his heart.

"OOoooh", the demon says, positively joyous, "this is going to be fun".

And with that the pain is back. Stiles tries to shut down, tries to keep all the things he most loves and fears locked in the back of his brain, but of course that's the first place the demon goes. The first fear it unlocks is his dad, dying of a bullet wound while on duty.

Stiles may not have control of his body, but he does feel a single tear roll down his cheek.

The demon notices, reaches up and catches it on the tip of a finger. It pops the finger in his mouth, tastes, and smiles. Then it walks Stiles' body over to the medical cabinet and roots around for a second, comes out grasping a scalpel. Stiles can feel his blood run cold as the demon cackles, and he gives up being the better man and prays for Derek to get here, fast. The demon just laughs again and starts to strip off his shirt.


A/N: AHAHAhahahaa this was SO much fun to write! I've never really done horror, and...I like it.

Do YOU like it? Let me know, because you have no idea how much that inspires me.

ALSO, for those playing along at home, 'Te Rogamus, Audi Nos' translates to 'We Beseech Thee, Hear Us'.

ALSO ALSO, if you have the inclination to follow me on Tumblr, my user-name is Clandestine Gardenias, and I will probably update faster there than I will here.

See you next time!