Albert Parker Director James Mason Jim Martin Actor Virginia Cherrill Janet Graham Actor Alastair Sim MacPherson Actor Ian Colin Ronnie Carson Actor Clifford McLaglen Rudolf Weinhart Actor Cyril Cusack Jules Actor David Horne Williams Actor Antoinette Cellier Sylvia Caporelli Actor Donald Wolfit Inspector Greville Actor Ingram D'Abbes Screenwriter Fenn Sherie Screenwriter