An in-depth look at the lives and crimes of some of the world's most evil killers, including Jeffrey Dahmer, Richard Ramirez, Cary Stayner, Leonard Lake, Dorothea Puente and more.
Railway Killers John Duffy and David Mulcahy killed three women and raped many more across a four-year period in the early 1980s.
S2E13 43 min
