At any given time there are between 30 and 50 serial killers roaming the streets of America. These are some of their stories.
A catalogue of evil, including;
Sean Vincent Gillis: A depraved psychopath who used his victims' body parts as sex toys.
Thomas Piper: Outwardly respectable clergyman who had a deadly obsession with little girls.
Louise Peete: Sex-crazed femme fatale who committed three murders and also drove four of her husbands to suicide.
Thor Nis Christiansen: Killed four young women in order to have sex with their corpses.
Roger Kibbe: The ruthless I-5 Strangler murdered at least 8 stranded female motorists along California's freeways.
Orville Lee Majors: Angel of Death who waged a deadly campaign against his elderly patients. Believed to be responsible for over 100 murders.
Robert Shulman: This Long Island prostitute slayer bludgeoned his victims before hacking them to pieces.
Tillie Klimek: "Psychic" who predicted her victims' deaths, right before she poisoned them.
Jarvis Catoe: D.C. serial killer whose murder spree prompted a Congressional hearing, and changes to the Washington Police Department.
Mack Ray Edwards: Edwards found a unique way of getting rid of his victims - he buried them under the freeways he was building.