Hans Bethe
— Self
Bruno Bettelheim
— Self
Arthur Cunningham
— Narrator
Felicia Deyrup
— Self
Alfred Eisenstaedt
— Self
Enrico Fermi
— Self
Mary Jayne Gold
— Self
Hanna Holborn Gray
— Self
Dolly Haas
— Self
Fritz Lang
— Self
Erich Leinsdorf
— Self
Lotte Lenya
— Self
Golo Mann
— Self
Herbert Marcuse
— Self
Hans Sahl
— Self
Nuria Schoenberg
— Self
Rod Serling
— Self
Leó Szilárd
— Self
Edward Teller
— Self
Sabine Thomson
— Narrator
Billy Wilder
— Self
Helen Wolff
— Self