David Hedison as Andre Delambre

Patricia Owens as Helene Delambre

Vincent Price as François Delambre

Herbert Marshall as Insp. Charas

Kathleen Freeman as Emma

Betty Lou Gerson as Nurse Andersone

Charles Herbert as Philippe Delambre

Eugene Borden as Dr. Ejoute (uncredited)

George Calliga as Club Member (uncredited)

Harry Carter as Orderly (uncredited)

Bill Clark as Policeman (uncredited)

Arthur Dulac as French Waiter (uncredited)

Bess Flowers as Audience Member (uncredited)

Herschel Graham as Club Member (uncredited)

Torben Meyer as Gaston (uncredited)

Sol Murgi as Audience Member (uncredited)

George Nardelli as Detective (uncredited)

Franz Roehn as Police Doctor (uncredited)

Charles Tannen as Doctor (uncredited)