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John Gregson as Inspector Parnell |
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Alec Clunes as Anthony Chester |
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Robert Shaw as Marlowe |
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Helen Cherry as Robbie |
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Betty McDowall as Maggie Parnell |
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William Hartnell as Freddie Maddox |
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Harry Fowler as Smiley |
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Alan Wheatley as Assistant Commissioner Bewley |
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Kenneth Cope as Sergeant Grey |
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Ernest Clark as Police Doctor |
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Noel Howlett as Brain Specialist |
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Renée Houston as Masie Maddox |
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Piers Bishop as Jonathan Chester |
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Frank Hawkins as Mr. Tamplin |
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Ray Smith as Mr. Briggs |
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Christopher Ellis as Christopher Parnell |
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John Dunbar as Sgt. Henry |
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Edward Rees as Desk Sergeant |
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Robert Hunter as Desk Sergeant |
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Anthony Ashdown as Constable Jackson |
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Alan Curtis as Inspector |
| Directing | Lance Comfort | Director |
| Writing | James Kelley | Screenplay |
| Writing | James Kelley | Original Story |
| Writing | Peter Miller | Screenplay |
| Writing | Peter Miller | Original Story |
| Production | Tom Blakeley | Producer |
| Sound | Bernie Fenton | Original Music Composer |
| Camera | Basil Emmott | Director of Photography |
| Editing | John Trumper | Editor |
| Art | Jack Shampan | Art Direction |
| Costume & Make-Up | Peter Armston | Makeup Artist |
