De zoon van een Britse agent wordt ontvoerd en vastgehouden voor losgeld in diamanten. De agent komt erachter dat hij niet eens kan rekenen op de mensen waarvan hij dacht dat ze aan zijn kant stonden om hem te helpen, dus besluit hij zelf de ontvoerders op te sporen.
Nee, helaas is The Black Windmill nog niet beschikbaar op Netflix in Nederland.
| 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 |
