Watch Worlds Most Evil Killers Season 4 Episode 1 online free

Elizabeth Yardley
Self - Criminologist

Fred Dinenage
Self - Narrator

Geoffrey Wansell
Self - Author & Journalist

Stuart Hamilton
Self - Forensic Pathologist

Rex Julian Beaber
Self - Forensic Psychologist

Ross Huguet
Self - Narrator (US version)

Bobby Chacon
Self - FBI Special Agent, 1987-2014

Stephan Harbort
Self - Criminologist

Daniel Ryves
Journalist

Harold Schechter
Self - Author, The Serial Killer Files

Helen Morrison
Self - Forensic Psychologist

Chris Carter
Self - Best-Selling Author & Former Criminal Psychologist

Geoffrey Osborne
Police Officer

Susan Mustafa
Self - True Crime Author

Lars Larson
Self - Talk Show Host & Journalist

Katherine Ramsland
Self - Forensic Psychologist

Brian Jarvis
Self - Former Detective Sergeant, Marion County Sheriff's Office

Cliff Shepard
Self - Retired Detective, LAPD