A British agent's son is kidnapped and held for a ransom of diamonds. The agent finds out that he can't even count on the people he thought were on his side to help him, so he decides to track down the kidnappers himself.
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| Directing | Don Siegel | Director |
| Costume & Make-Up | Freddie Williamson | Makeup Artist |
| Writing | Clive Egleton | Novel |
| Costume & Make-Up | Anthony Mendleson | Costume Design |
| Editing | Antony Gibbs | Editor |
| Production | Eva Monley | Production Manager |
| Art | Peter Murton | Art Direction |
| Camera | Ousama Rawi | Director of Photography |
| Writing | Leigh Vance | Screenplay |
| Production | Richard D. Zanuck | Executive Producer |
| Directing | Kip Gowans | Assistant Director |
| Production | David Brown | Executive Producer |
| Sound | Gerry Humphreys | Sound Recordist |
| Sound | Roy Budd | Original Music Composer |
| Sound | John W. Mitchell | Sound Recordist |
| Sound | Les Wiggins | Sound Editor |
| Camera | Colin Davidson | Clapper Loader |
| Production | Don Siegel | Producer |
| Lighting | Nobby Cross | Gaffer |
| Costume & Make-Up | Rosemary Burrows | Wardrobe Supervisor |
| Directing | Angela Allen | Continuity |
| Camera | Dewi Humphreys | Focus Puller |
| Camera | James Devis | Camera Operator |
| Production | Scott Hale | Associate Producer |
