[presented by] GB Pictures ; directed by Maurice Elvey ; screen story, Kurt Siodmak. Non-stop New York / General Film Distributors, Ltd. ; a Gaumont British Production ; directed by Robert Stevenson ; screenplay, Roland Pertwee, J.O.C. Orton
Gaumont Pictures, Diamond Entertainment Corporation, TGG Direct ; produced by Michael Balcon, Ivor Montagu ; screenplay by Charles Bennett, Ian Hay, Alma Reville ; directed by Alfred Hitchcock