John Hockenberry
— Narrator
Ian Jarvis
— Narrator
Toni Gannon
— Narrator
Michael Mevoglioni
— self
Victor Varnado
— self
Evelyn Pate
— self
Alexandra Roberts
— self
Gary Ruvolo
— self
Lucille Choohjy
— self
Corinna Jeanine Fleck
— self (as Nina Fleck)
Dennis Leroy Kangalee
— self
Kirsten Campbell
— self
Anna Korenius
— aryan
Joel Bresland
— aryan
Brigitte Hagerman
— Field Investigator
Cody Buffinton
— Harry Laughlin
Scott Abbondanzo
— Earl Laughlin
Peter Demas
— Young Charles Davenport
Marcus A. Cooley
— Baby Bolinger
Vera Keller
— Emma Buck
Jessica Savage
— Carrie Buck
Ila Starr Danels
— Baby Vivian
Kenneth Strawhand
— Inquisitor
Lenny Finkelstein
— Supreme Court Justice
James Anderson
— Supreme Court Justice
Alec Dana
— Supreme Court Justice
John J. Quinn
— Supreme Court Justice
Matt Kirk
— Cow Milker
Hans Longo
— Adolf Hitler
Rick Marshall
— Josef Mengele