Nathalie Breuer

Narrator (voice)

Christian Page

Self - Author & Journalist

Jo Di Mambro

Self (archive footage)

Luc Jouret

Self (archive footage)

Danny Gilmore

Richard Ramirez

Doreen Lioy

Herself

George Gavito

Self - Former Lieutenant, Cameron County Sheriff's Department

Cliff Linedecker

Self - Author

Dawn Perlmutter

Self - Ritual Murder Expert

William Ramsey

Self - Author

Gilles Chamberland

Self - Psychiatrist

Giomny Ruiz

Self - University of Montreal

Kenneth V. Lanning

Self - Former FBI Agent

Adolfo Constanzo

Self (archive footage)

Claire Booth

Self - Author

Julia Scheeres

Self - Journalist

William Veale

Self - Retired Chief Assistant Public Defender

Steve Nash

Self - Detective, Marin Count Sheriff's Department

Olga Land

Self

Richard Brzeczek

Self - Former Superintendent of Police, Chicago Police Department

Steven Goldstein

Self - Author

Lawrence Troka

Self - Detective, Cook County

Joel Goldstein

Self - Assistant State Attorney, Cook County

Katherine Ramsland

Self - Professor of Forensic Psychology

Victoria Redstall

Self - Author

Patrick Driscoll

Self - Attorney of Andrew Kokoraleis

Holden Wong

Kent Shui

Daphnée Férole

Beverly Washington

Jacques St-Pierre

Self - Former Investigator

Arnaud Bédat

Self - Journalist

Jean-François Mayer

Self - Theology Historian

Alain Leclerc

Self - Attorney for the Court of Paris

Joseph Antaki

Stefano Mele

Arnaud Palisson

Self - Formal French Intelligence Annalist

René Michaud

Self - Fire Chief of Cheiry

Nigel Cawthorne

Self - Author, The World's Greatest Cults

Clement Godin

Self - Former Fire Chief

Rod Ferrell

Self - Convicted Murderer (archive footage)

Candace Hawthorne

Self - Roderick Ferrell's Trial Attorney

Christopher Quarles

Self - Appellate Lawyer

Scott Andersson

Self - Convicted Murderer (archive footage)

Shirley Tatum

Self

Dana Cooper

Self - Convicted Murderer (archive footage)

Charity Keesee

Self - Convicted Murderer (archive footage)

Heather Wendorff

Self - Daughter of Richard Wendorf

James E. Beckner

Self - Retired Judge

John Huffine

Self - Retired Detective Captain, Greene County Sheriff's Office

Gina Stafford

Self - Former Journalist

Madonna Wallen

Self - Mother of Natasha Cornett

Kennetta Pratt

Self - Criminal Investigator

Alexandra Doucet

Rosemary Mcarfty

Woody Smith

Self - Attorney of Joseph Risner

Stephen Owens

Self - Attorney of Dean Mullins

Natasha Wallen Cornett

Self - Murderer (archive footage)

Camille Banville

Natasha Wallen Cornett

Michele Tollis

Self - Father of Fabio Tollis

Mario Spezi

Self - Journalist

Francesca Cramis

Self - Attorney of Nicolas Sapone & Elisabetta Ballarin

Salvatore Cosco

Self - Attorney of the Pezzotta Family

Silvio Pezzotta

Self - Father of Mariangela Pezzotta

Emilio Beretta

Self - Attorney of the Tollis Family

Gerard Lopez

Self - Psychiatrist

Jonathan Paul

Self - Author

Jacques Sirgent

Self - Historian

Jérémy Hervieux-Gosselin

Mathew Hardman

Jacqueline Laforce

Mabel Leyshon

Hans Reinhardt

Self - Attorney of Daniel Ruda

Michael Emde

Self - Attorney of the Hackert Family

Daniel Ruda

Self - Convicted Murderer (archive footage)

Manuela Ruda

Self - Convicted Murderer (archive footage)

Philippe Hartmann

Stephen O. Simpson

Dany Gange

Journaliste #1

Wilson Guerrero

Paolo Mainardi

Bianca De Luca

Antonnella Migliorini

Yvan Ross

Carl Drew

Pierre-François Bouffard

Cowan

Danny Hellyar

Self

Rose-Marie Stephens

Self

Carol Ivy

Self - Journalist

Simon Daniel Boisvert

Herbert Mullin

Bernard Arène

Lawrence White