| Cast list | | George Nader | as | Paul Gregory | | Maggie Smith | as | Bridget Howard | | Bernard Lee | as | Victor Sloane, alias Lee Henderson | | Geoffrey Keen | as | Inspector Scott | | Bessie Love | as | Harriet P. Jefferson | | Harry H. Corbett | as | Sullivan | | Andree Melly | as | Rosa, cocktail waitress |
| | Crew list: | | Basil Dearden (Director) | | Seth Holt (Director) | | Seth Holt (Writer) | | Donald MacKenzie (Writer) |
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