Paul Stein Director Robert Beatty Dr. Paul Rankin Actor Mervyn Johns Dr. Bruckner the Beast of Ravensbruck Actor Nova Pilbeam Tracy Hart Actor Margaretta Scott Sister 'Johnnie' Johnson Actor Sybille Binder Martha Lert Actor Marie Lohr Mrs. Coles Actor Karel Stepanek Prof. Inman Actor Alan Wheatley M.W. Kennedy Actor Gladys Henson Mrs. Plum Actor John Salew Padre Latham Actor Anthony Eustrel Dr. Richard Forrester Actor Carl Jaffe Heinz Actor Ronald Adam Col Ingram Actor Martin Miller Van Hessian Actor Aubrey Mallalieu Maj. Walsh Actor Jack Whittingham Screenwriter Louis H. Jackson Producer Hans May Original Music Moray Grant Cinematographer James Wilson Cinematographer Joseph Sterling Film Editing C. Wilfred Arnold Art Director L.W. Tweedy Costume Design