David Hedison
Andre Delambre
Patricia Owens
Helene Delambre
Vincent Price
François Delambre
Herbert Marshall
Insp. Charas
Kathleen Freeman
Emma
Betty Lou Gerson
Nurse Andersone
Charles Herbert
Philippe Delambre
Eugene Borden
Dr. Ejoute (uncredited)
George Calliga
Club Member (uncredited)
Harry Carter
Orderly (uncredited)
Bill Clark
Policeman (uncredited)
Arthur Dulac
French Waiter (uncredited)
Bess Flowers
Audience Member (uncredited)
Herschel Graham
Club Member (uncredited)
Torben Meyer
Gaston (uncredited)
Sol Murgi
Audience Member (uncredited)
George Nardelli
Detective (uncredited)
Franz Roehn
Police Doctor (uncredited)
Charles Tannen
Doctor (uncredited)