The Breach in the Wall

(Teenlock AU) John Watson's relationship with Sherlock Holmes really started with the breach in the wall. A simple gap in the ten-foot brick barrier surrounding the campus, and in the pile of rubble that remained, a dead body.
School hadn't even started yet, and already John found himself dragged into a hurricane of mystery and horror much more thrilling than anything the drama of teenage gossip would have offered. And the only one guiding his way was his new roommate, although John might've doubted that Sherlock wasn't the murderer himself.