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Diane Cilento as Margo Wendice |
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Laurence Harvey as Tony Wendice |
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Hugh O'Brian as Mark Halliday |
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Cyril Cusack as Chief Insp. Hubbard |
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Nigel Davenport as Lesgate |
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Glynn Edwards as Sgt. Edwards |
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Garry Marsh as Lionel |
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Joanne Dainton as Barmaid |
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Arthur Hewlett as Hotel Clerk |
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Carole Ann Ford as |
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Michael Gaunt as Det. Sgt. Williams |
| Production | David Susskind | Producer |
| Directing | John Llewellyn Moxey | Director |
