Directed by Compton Bennett Written by George H. Brown Patrick Kirwan Dirk Bogarde as Simon Van Halder Mai Zetterling as Anna DeBurg Philip Friend as Captain Bob Sawyer Albert Lieven as Paul Ravitch Fritz Wendhausen as Warder Goeter Carl Jaffe as Becker Gerard Heinz as German Prison Doctor André Mikhelson as Polizei Inspector Harold Ayer as Captain Trevor Wood Walter Gotell as Ravitch's Servant-Henchman Friedrich Joloff as Valentin Vladek Simone Silva as Mink, Valentin's girl Ferdy Mayne as Detective Laurence Walter Rilla as Colonel Bertrand, Dutch consulate Antonio Gallardo as Spanish Dancer Paul Hardtmuth as Wharf Watchman Theodore Bikel as Anton Meyer Directed by Lewis Gilbert James Kenney as Roy Walsh Joan Collins as Rene Collins Betty Ann Davies as Elsie Walsh Robert Ayres as Bob Stevens Hermione Baddeley as Mrs. Collins Hermione Gingold as Queenie Nancy Roberts as Gran Walsh Laurence Naismith as Inspector Donaldson Ian Whittaker as Alfie Collins Stanley Escane as Pete Michael McKeag as Brian Sean Lynch as Darky Johnny Briggs as Skinny Johnson Edward Evans as Sergeant Woods Cameron Hall as Mr. Beverley Sid James as Police Sergeant Frederick Piper as Mr Easter Anthony Oliver as Doctor