Ralph Ince Director Esmond Knight Pete Borden Actor Lilli Palmer Natacha Actor Cecil Parker Assistant Commissioner Actor George Merritt Detective Inspector Cardby Actor Raymond Lovell Delaney Actor Wyndham Goldie Conway Addison Actor Peter Gawthorne Newall Actor Jane Millican Lady Sybil Actor Stella Arbenina Lady Mead Actor Ralph Smart Writer Brock Williams Writer Irving Asher Producer Basil Emmott Cinematographer Bert Bates Film Editing Peter Proud Art Director