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Peggy Cummins as Clare Hemsley |
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Terence Morgan as Terence Winch |
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Ronald Squire as Victor Hemsley |
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James Hayter as Dutton |
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Marie Lohr as Dowager |
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Geoffrey Sumner as Teddy |
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David Hurst as Beckstein |
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Charles Goldner as Hotel Manager |
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Jacques Brunius as Inspector |
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Jill Day as Singer |
| Writing | Ralph Smart | Writer |
| Directing | Ralph Smart | Director |
| Production | Robert Garrett | Producer |
| Writing | Peter Jones | Writer |
| Editing | Alfred Roome | Editor |
| Art | Maurice Carter | Art Direction |
| Sound | Benjamin Frankel | Original Music Composer |
| Camera | James Bawden | Camera Operator |
| Sound | Roger Cherrill | Sound Editor |
| Crew | Arthur Alcott | Production Controller |
| Costume & Make-Up | George Blackler | Makeup Artist |
| Sound | Gordon K. McCallum | Sound Recordist |
| Production | Denis Holt | Production Manager |
| Costume & Make-Up | Julie Harris | Costume Designer |
| Sound | C.C. Stevens | Sound Recordist |
| Sound | Benjamin Frankel | Music Director |
| Directing | Peter Bolton | Assistant Director |
| Directing | Yvonne Axeworthy | Continuity |
| Production | George Pitcher | Associate Producer |
| Camera | C.M. Pennington-Richards | Director of Photography |
