Here's the backstory of my favorite serial killer, driven to kill by obnoxious noises. ----- Felix had found the source of the annoying noise. It was coming from the shed outside. The idiots that ran this place must have had a generator in there and were using it to power the lights. In Felix’s opinion, the din was not worth the light. There was no excuse for such a racket. The clattering engine noises ricocheted between the peeling walls of the institution and the warped walls of Felix’s mind. Were it not for the risk of more noises assaulting him outside, he’d have marched out to the shed and shut the thing off. The lights be damned. He found those annoying too, with the incandescent bulbs emitting the high-frequency buzz of a hovering mosquito. No, darkness was Felix’s friend. And darkness came with another of his friends, his best friend, in fact – peace. The man wanted nothing more than to silence every source of sound that violated his peace. The science people had raked over his psyche after his killing spree to identify a triggering event that set him off. Had someone subjected him to an awful, torturous noise as a child? Perhaps as punishment? Or sick abuse? There was no such event. As he found most sounds irritating, and human sounds more irritating than most, Felix grew into something of a hermit after his teen years. He took jobs that kept him away from crowds, such as night security patrol, or cleaning office buildings, again at night. His daily routine centred around the avoidance of noise, and thus the avoidance of its usual source - people. This included buying his groceries either when the supermarket first opened in the morning, or just before it closed at night. Felix survived a long time with this lifestyle; well into his thirties. Until everything came crashing down during one of these shopping trips. Unable to find an empty cashier, he’d had to wait behind a lady buying wine. Drunk already, she’d launched into a tirade against the poor serving girl. Felix wasn’t sure of the detail. The cashier was either asking for ID or refusing to serve her; he didn't care. All he cared about was the assault on his mental equilibrium when the mad customer started screeching her indignation.