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

Torben Meyer

Gaston (uncredited)

Eugene Borden

Dr. Ejoute (uncredited)

Bill Clark

Policeman (uncredited)

Harry Carter

Orderly (uncredited)

Bess Flowers

Audience Member (uncredited)

Bill Clark

Policeman (uncredited)

Arthur Dulac

French Waiter (uncredited)

Herschel Graham

Club Member (uncredited)

George Calliga

Club Member (uncredited)

Sol Murgi

Audience Member (uncredited)

George Nardelli

Detective (uncredited)

Charles Tannen

Doctor (uncredited)

Franz Roehn

Police Doctor (uncredited)