A man confesses that he "accidentally" killed his best friend while cleaning his gun. During his interrogation, he stuns police by revealing that he's behind a long trail of bloodshed and is a serial killer who seems to consider himself an angel of mercy.

Behind a church lies a dismembered body burned beyond recognition. Investigators identify the victim by fingerprints and receive a tip the suspect is female. A police interview reveals her as the most remorseless psychopathic killer they've ever seen.