. >> and low and behold, we find charles boney. >> charles boney.mean a thing. i'd never heard the name before. uh, it was a complete shock to me. >> reporter: charles boney. a name that would change everything in the case against david camm. boney. his prison nickname was "backbone": the same name inked in on the sweatshirt's collar. >> who does this guy "boney" turn out to be? >> as brainy as ted bundy and as brawny as mike tyson. he's a sociopath. >> reporter: charles boney -- a criminal with a history of violent crimes against women. it began in the 1980's, when he was a student at indiana university. newspapers called him the shoe bandit, and followed his bizarre crimes. there'd been four separate incidents -- his early m.o.? he'd knock a woman to the ground and make off with one of her shoes. >> really creepy stuff like one crime, he wore one of those china doll masks. i mean, like creepy stuff you can't make up. >> reporter: the police were onto him. after one arrest, he admitted in effect, that he had a thing for ladies' legs and feet. he pl