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| Cast |
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| Jerry Mason | VERNO, Jerry |
| 'Mrs LeGrange' | HOLLES, Antony |
| Gentleman Charlie | NORFOLK, Edgar |
| Mr Meek | MORANT, Philip |
| Mrs Harkness | GROVE, Sybil |
| Joyce Dacre | SHERBORNE, Vera |
| Miss Meek | BROWNE, Paddy |
| bugging device operator (uncredited) | POWELL, Michael |
| (uncredited) | HUBERT, Frank |
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| Credits |
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| Director | POWELL, Michael |
| Production Company | Film Engineering Company |
| Producer | JACKSON, Jerome |
| Screenplay (uncredited) | SMART, Ralph |
| Story | MacDONALD, Philip |
| | SMART, Ralph |
| Photography | FAITHFULL, Geoffrey |
| | GRANT, Arthur |
| Editor | SEABOURNE, A. |
| Art Director | SAUNDERS, Charles |
| Sound | ROSE, M. |
| Studio | Nettlefold Studios (Walton-on-Thames) |
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