Reparto (por orden de créditos)
Vernell Bass
Self - Oxford Apartments Resident
Henry Zebrowski
Self - Co-Host, The Last Podcast on the Left
Ben Kissel
Self - Host, Last Podcast on the Left
Nancy Glass
Self - Journalist
Fred Berlin
Self - Psychiatrist and Expert at Dahmer's Trial
Mike Kukral
Self - Classmate of Jeffrey Dahmer
Jeffrey Dahmer
Self(archiveFootage)
Lionel Dahmer
Self - Jeffrey's Father(archiveFootage)
Joyce Dahmer
Self - Jeffrey's Mother(archiveFootage)
David Dahmer
Self - Jeffrey's Brother(archiveFootage)
E. Michael McCann
Self - Former District Attorney, Milwaukee County
Savannah Brymer
Self - Podcast Host, Killer Instinct
Luka Magnotta
Self - Butcher of Montreal(archiveFootage)
Catherine Dahmer
Self - Jeffrey's Grandmother(archiveFootage)
Steven Hicks
Self - Victim 1(archiveFootage)
Michael Drane
Self - Psychotherapist and Host of Unpopular Culture
Goldie Adams
Self - Milwaukee Drag Performer
Armin Meiwes
Self - The Rotenburg Cannibal(archiveFootage)
Steven W. Tuomi
Self - Victim 2(archiveFootage)
Jet Setting Jasmine
Self - Psychotherapist, Master Fetish Trainer
James E. Doxtator
Self - Victim 3(archiveFootage)
Richard Guerrero
Self - Victim 4(archiveFootage)
Dmitry Baksheevy
Self - Half of the Krasnodar Cannibals(archiveFootage)
Natalia Baksheevy
Anthony Sears
Self - Victim 5(archiveFootage)
Raymond Smith
Self - Victim 6(archiveFootage)
Edward W. Smith
Self - Victim 7(archiveFootage)
Ernest Miller
Self - Victim 8(archiveFootage)
David C. Thomas
Self - Victim 9(archiveFootage)
Ed Gein
Self - The Plainfield Butcher(archiveFootage)
Cola Styles
Self - Walker Point Resident, Witness
Konerak Sinthasomphone
Self - Victim 13(archiveFootage)
Tracy Edwards
Self - Surviving Victim(archiveFootage)
Gerald P. Boyle
Self - Dahmer's Attorney(archiveFootage)
Jake Arthur
André Wilkerson
Franco A. Zermeño