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Malcolm Keen as Mark Lyndon |
 |
Jack Raine as Philip Tarry |
 |
Martin Lewis as John Bredon |
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Kathleen Kelly as Joan Bredon |
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Gordon Begg as Holford |
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Henry B. Longhurst as Inspector Hurley |
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Joyce Kennedy as Mrs. Bredon |
| Directing | Norman Walker | Director |
| Editing | David Lean | Editor |
| Art | G.F. Stegmann | Art Direction |
| Writing | Dion Titheradge | Writer |
| Sound | John Dennis | Sound Recordist |
| Directing | Cecil Dixon | Assistant Director |
| Camera | Cyril Bristow | Director of Photography |
| Writing | Dorothy Rowan | Screenplay |
