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