Calificación
Reparto

Richard Carlson
Dr. Geoffrey Burton

Nancy Kelly
Pat Lindsay

Albert Bassermann
Dr. Storm

Miles Mander
Professor Langer

Edward Gargan
Officer Charlie Prescott

Adrian Morris
Officer John Prescott

Martin Kosleck
George Taylor

Walter Kingsford
Heydt

Cy Kendall
Dahlig

Nestor Paiva
Grube

Oscar O'Shea
Pa Prescott

Mary Gordon
Ma Prescott

Arthur Loft
Inspector Karns

Marion Martin
Nurse

Clem Bevans
Station Watchman

John Butler
Detective Jenks