Ever since childhood, author Kevin Wilson has lived with disturbing images that flash through his mind without warning.
"I've always had this kind of agitation and looping thoughts and small tics," he says. "Falling off of tall buildings, getting stabbed, catching on fire — they were these just quick, kind of violent bursts in my head."
Not that Wilson would ever harm anyone else — the harm in these quick, intrusive thoughts was strictly internal. The images fed off of his own anxiety, and left him feeling terrified.