Sherlock: High School AU. (Sherlock x Avengers x Supernatural x Doctor Who) (I should probably put it in the crossover section but I can't be bothered. If you have friends who like this sort of thing but don't frequent the Sherlock archive, send them the link :D and yes, I am shameless in my attempt to advertise).

Summary: John is a normal, well adjusted (or so everyone thinks) teenage boy. He goes out with girls, he finishes most of his homework, he plays cricket and football (well, he would if his shoulder wasn't so fucked up) and the majority of his teachers like him. This is the main reason he is given the duty of looking after the new kid, Sherlock Holmes, an anti-social genius whose main interests lay in brutal murders and obscure facts, such as the differences (and he assured you there were many) between various brands of tobacco ash, or types of perfume. And for a moment, John hates the fact he's been stuck with this boy, this loser, this machine, because he drives away everyone, including John's real friends. But then a horrific murder occurs, a young girl, one of their classmates, is found dead, bound, gagged and raped, smothered in blood, so very much blood, too much blood. And only Sherlock can truly see how many layers there are to this crime. With John by his side, maybe, just maybe, they can solve this puzzle and stop it from happening again.

A/N: What am I doing? Seriously, I have three other stories I should be doing. I suppose this is me celebrating ending a story (or at least putting it to bed for a while) with another story. But seriously, you need to take my computer away from me. I keep writing stories when I should be working on one of my already published stories. Ugh, I need help. Well, anyway, I suppose I'm running on a high from the Avengers gag reel (not to mention all the high school AU's I've been reading). I decided I wanted to do a crossover, but also a high school one, which is where this came in. I hope you like it. You should really be telling me to get back to work on Just One Touch or You Fascinate Me or Doctor John.

Oh, and P.S. this is probably going to contain nearly every pairing (that means there will be LOTS of guys with guys) under the sun. :P

Disclaimer: I do not own Sherlock, Supernatural, the Avengers or Doctor Who. I wish I did.

Pandemonium College and Boarding House was not your ordinary school by any means. The strange occurrences there and the surrounding towns were well documented in local history. Any student could reel off several of the more infamous rumours which ghosted through the halls (all of which were written down in an old diary of a former student). The most popular was that involving the Level One History teacher: Doctor John Smith. Because, despite having worked at the school for over fifty years (some would even wager that he'd been there since the day it was founded over one hundred years ago), he never seemed to age. In fact, he seemed to get younger. The school, however, said it was simply a coincidence that several doctors by the name of John Smith had applied for the position in the past five decades. They'd made no attempt to explain the strange phenomenon that seemed to occur whenever the man was around, nor did they offer any reasons as to why Doctor Smith (who preferred everyone to simply refer to him as the Doctor) kept a 60s era Police Public Call Box in his office.

Of course, 'the' Doctor wasn't the only curiosity in PCBH history. There was the legend of the Winchesters, a family who had been attending the school for several generations. They were well-known to be involved in the occult and other 'weird' things; it was a Winchester who had started the infamous Paranormal and Occult Studies Club (also known as the 'Black Magic' Club) and every Winchester ever in existence had been a member. Granted, they were privately thought to be complete loons by most other students, the key word being privately. No one was brave enough to say it aloud, especially in recent years with the newest additions to the Winchester clan; Dean, the older brother, and Sam, the younger brother. Both were troublemakers. Well, Sam was more of an 'I'll-do-as-my-brother-does' type, but he still pulled a few pranks of his own accord every now and then.

And even more mysterious than the students and faculty was the building itself. There were constant whispers about monsters in the basement and ghosts in the attic, the hidden doors and walkways and corridors that snaked under and over and around the school in an uncoordinated and unpredictable fashion (merely guesswork, no one was ever able to find even one of these passageways). Along with secret corridors, there were rooms never shown on any map whose doors were always locked, whose windows were always shuttered. Theories abounded about the various uses of these rooms, mostly featuring vampires, zombies or genetic experiments gone wrong. One particular room, Lab 4.5, was the only one to have ever been opened to the student population, and that was because something had caught fire and they needed to air it out. Not that it was very informative. All that was left of the room's innards was the charred and twisted remains of unidentifiable lumps. There was, however, one thing in that room that set tongues wagging; a large, metal hook suspended from the unnaturally high ceiling, which, though it might just have been a trick of the light, or teenage imaginations run wild, seemed to be, well, covered in blood. Not just, you know, specked with blood, but covered. Some of the older (and more sadistic) students delight in informing new students about how the school punishes misbehaving students involving that hook, several venomous snakes, a pit of fire and a mix tape containing Justin Bieber and Rebecca Black on repeat. This practice was quickly banned by Principal Fury on the grounds that, "I am not payin' several mother fuckin' thousand dollars to put a bunch of snot nosed shitheads through therapy because you little fuckin' assholes decided to terrorise 'em. Next person to bring up that mother fuckin' laboratory gets a fuckin' cap in his ass!" And yes, those were his exact words to the senior class, and to every senior class since. Because of course, Pandemonium College wouldn't be complete without its tough as nails, scary as all hell Principal, though a large part of his attitude came from the fact he wore a freaking eye patch. Seriously, an eye patch.

But the greatest presence to ever grace those dimly lit yet somehow still overly classy halls (his words, not mine) hadn't even arrived yet. He was still being thrown out of his last school for blowing up the science lab. Again. His-soon-to-be-best-friend (not that he actually knew it), however, was currently sitting in Level Two Chemistry, being bored out of his mind.

"John Watson! Pay attention, young man. This is important stuff!" Snapped Mrs Turner.

John jerked his gaze away from the window, moulding his features into what he hoped was apologetic enough to appease his Chemistry teacher.

Mrs Turner turned back to the whiteboard, while John's friends shot him a 'haha, you got caught' look.

John let out a soft sigh, wishing he could go back to bed and bury himself in his mountain of blankets and quilts (what? It gets rather cold at night-time and his mother sent them to him especially). Instead, he picked up his pen and started scrawling in his nearly incomprehensible handwriting that was the constant ire of his friends.

A few minutes later, a scrunched up scrap of paper clattered onto his desk. Looking about surreptitiously, he couldn't spot any obvious perpetrators (though he could certainly rattle off a list of those he would consider guilty without evidence. He glanced back down at the harmless, yet at the same time sinister (who knows what could happen? Voodoo curse? Insidious lie? Paper cut?), before gathering a square of his courage and unfolding the note.

Hey, stud. Free tonight? Nod once if yes ;)

John frowned. This note couldn't possibly be for him. Not that the opposite sex (or indeed, a few select members of his own sex) found him unattractive, it was more to the fact that girls (or guys) who asked you out via a note chucked across a classroom weren't into John's 'vanilla' image. Some were, mostly those who got off on stirring a few handfuls of chocolate chips into the vanilla mix, but the majority weren't. John had a strict policy (well, it was somewhat strict, allowances could always be made… what? He is sixteen after all) to reject all offers that are not made in person. So, hoping the sender was watching, John shredded the message into tiny pieces before sweeping the remains into his bag.

He peeked around at his class, only to find another note on his desk. He frowned, opening it up with much less trepidation.

What's wrong? Afraid of the unknown? Just nod once so I can rock your world ;)

He rolled his eyes and tore up the note and when another appeared on his desk, he pointedly ignored it. By the end of the lesson, there was a small pile of scrunched up paper on his desk. The bell rang and Mrs Turner called out a hasty instruction to read chapter twelve and finish the questions on molecular structure which few headed. John shouldered his bag, choosing to sweep the remainder of the unwanted notes into the bin.

Just as he was exiting the class, John felt a tug on his shirtsleeve.

"Can we please not do this now? I've only got one-"

"Was it really necessary to reject me so harshly? Honestly, John, all I wanted to know was if you wanted to watch a movie with me." A familiar voice whined.

"Tony." John said in surprise, turning to face his friend. "So it was you."

"Yes, it was me." Tony grinned. "So, you in or out? Bruce and Rory'll probably be there too."

"Um, I doubt it. I've got piles of homework to do and-"

"Homework-smomework. You can always do it later. It's only one movie." Tony said, waving away John's objections.

John sighed. "All right, I suppose I'll come. But just one movie, okay? And the next time you want to ask me something, do it in person. I don't respond to letters thrown across the class."

"You responded to Sarah." Tony responded with a devilish grin.

"Yeah, and look how that turned out." John said with a roll of his eyes.

"Whatever, John. I'll see you later, okay?"

"Yeah, bye." John waved goodbye and trudged off to biology. Well, that sorted his plans for the evening. Apologies to any ladies who arrived late. As if. Though, he couldn't help but feel a tad suspicious. Guys like Tony Stark (self-proclaimed genius/billionaire/playboys) always had an ulterior motive. Or perhaps John had just known the guy way too long. Probably both.

d(^_^)b

HFTS: Points if you can name which characters come from which fandom