Robert Hare

饰：Self - Consultant,(as Dr. Robert Hare)

Kevin Dutton

饰：Self - Consultant,(as Prof. Kevin Dutton)

Charles Albright

饰：Self - Texas Eyeball Killer

Joyce Alexander

饰：Self - Mother of Patrick

Elizabeth E. Baron

饰：Self - Justice (retired)

Mike Bosillo

饰：Self - Dallas County Attorney's Office

John Eden

饰：Self - Psychiatrist,(as Dr John Eden)

James Fallon

饰：Self,(as Professor Jim Fallon)

Paul Frick

饰：Self - University of New Orleans,(as Prof. Paul Frick)

Kenneth Bianchi

饰：Himself

Richard S. Fuld

饰：Himself

Skip Hollingsworth

饰：Himself - Executive Editor, Texas Monthly

克里斯托弗·埃利森

Christopher Ellison

饰：Self - Narrator, (as Chris Ellison)

Ralph Allison

Ralph Allison

饰：Self - Court Appointed Psychiatrist,(as Ralph Allison MD)

大卫·詹姆斯

David James

饰：Self - Footballer

Mary Ellen O'Toole

饰：Self - Senior FBI Profiler, retired,(as Dr. Mary Ellen O'Toole)

Michael Stone

饰：Self - Consultant

Andy McNab

饰：Self

Maia Szalavitz

Maia Szalavitz

饰：Self - Neuroscience Journalist