 It was made at Walton Studios and on location around London, mostly in the City of London, at a time when there was still much bomb damage from the Second World War.American actress Coleen Gray was reported to have been cast opposite Raft, but the role was eventually played by the English star Sally Gray.It was one of several films made by British companies in connection with the low-budget American outfit Lippert Pictures, which distributed the film in the United States.