Calificación
Reparto

Jim Bannon
Jack Packard

Anita Louise
Janet Mitchell

Michael Duane
Rex Kennedy

Barton Yarborough
Doc Long

Paul E. Burns
Leon Hartman

Thomas E. Jackson
Det. Capt. Quinn

Mona Barrie
Louise Mitchell

Frank Wilcox
Prof. Arthur Logan

Richard Hale
Curator Raymond Halliday

Ludwig Donath
Dr. Karger

Mary Newton
Nurse

Edward Earle
E. R. Willard

Fred Godoy
Senor Mendoza

John Elliott
John, butler

Frank Mayo
Quentin Mitchell

Frank Martin
Introductory Narrator (voice)