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Peter Reynolds as Stephen |
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Rona Anderson as Claire |
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Patrick Barr as Robert |
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Lana Morris as Marion |
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Genine Graham as Stella |
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Michael Balfour as Joe |
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John Forrest as Wally |
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Viola Lyel as Mrs. Barclay |
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Martin Walker as Prof. Barclay |
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John Le Mesurier as Inspector |
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Martin Benson as Bruno |
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Stephen Boyd as Policeman (uncredited) |
| Writing | Pietro Germi | Writer |
| Directing | Ken Hughes | Director |
| Writing | Ken Hughes | Story |
| Sound | Carlo Rustichelli | Music |
| Production | Roger Proudlock | Producer |
| Editing | Sam Simmonds | Editor |
| Camera | Gerald Gibbs | Director of Photography |
| Art | Don Chaffey | Art Direction |
