Directed by
| H. Manning Haynes | ... | (as Manning Haynes) |
Writing Credits (in alphabetical order)
| Edward Dryhurst | ... | (screenplay) |
| Neil Gordon | ... | (novel) |
Cast (in credits order) complete, awaiting verification
| John Stuart | ... | Peter Kerrigan | |
| Garry Marsh | ... | Sir George Ilford | |
| Annie Esmond | ... | Lady Caroline Claydon | |
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Campbell Gullan | ... | Tollemache |
| Evelyn Ankers | ... | Rosemary Shackleford | |
| Aubrey Mallalieu | ... | Lord Claydon | |
| Finlay Currie | ... | Rubin | |
| Joss Ambler | ... | Inspector Fleming | |
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Richard Parry | ... | Sgt. Midgley |
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Vernon Harris | ... | Rhodes - the Butler |
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Roy Russell | ||
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Ernest Borrow | ||
| Rest of cast listed alphabetically: | |||
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Valentine Dunn | ... | Margaret McGregor - the Maid (uncredited) |
| Ian Fleming | ... | Dr. Cleveland - Coroner (uncredited) | |
| Wilfrid Hyde-White | ... | Holmes (uncredited) | |
| John Laurie | ... | Wilson - the Valet (uncredited) | |
| Peter Madden | ... | 1st Murder Victim (uncredited) | |
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Richard Perry | ... | Sgt. Midgley (uncredited) |
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Ben Williams | ... | Gamekeeper (uncredited) |
| Donald Wolfit | ... | Executive (uncredited) | |
Produced by
| John Findlay | ... | producer (uncredited) |
Cinematography by
| James Wilson | ||
Editing by
| Fergus McDonell | ||
Art Direction by
| Carmen Dillon | ||
Second Unit Director or Assistant Director
| Edward Dryhurst | ... | assistant director |
Sound Department
| John Cox | ... | sound recordist |
| Cecil Mason | ... | sound recordist |
