Calificación
Reparto

Henry O'Neill
Dr. Everett Colner

Morris Ankrum
Lt. Pat McKay

Arthur Space
Burton Caighn Jr.

Paul Guilfoyle
Dudley Badger

Dorothy Adams
Mrs. Mary Abbott (uncredited)

Paul Langton
Peter Selkin (uncredited)

William Tannen
McKay's Assistant (uncredited)

Charles Thompson
David Ranklin (uncredited)

John Vosper
Dr. Elton Parkson (uncredited)

Jacqueline White
Jean Smith (uncredited)