Herbert Wilcox Director, Producer Anna Neagle Sally Maitland Actor Richard Greene Lieutenant Commander Jim Garrick Actor Nova Pilbeam Betty Maitland Actor Lucie Mannheim Madame Orlock Actor Albert Lieven Jan Orlock Actor Cyril Fletcher Entertainer Actor Margaret Rutherford Mrs. Towcester Actor Claude Bailey Major Fothergill Actor Patric Curwen Sir William Maitland Actor Marjorie Fielding Lady Maitland Actor David Horne Admiral Actor Franklin Dyall Captain Foster Actor George Thorpe Colonel Charles Hargraves Actor Valentine Dyall German Commander Actor P.M. Bower Writer Miles Malleson Screenwriter DeWitt Bodeen Screenwriter Mutz Greenbaum Cinematographer Vera Campbell Film Editing Clifton Parker Music William C. Andrews Art Director