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Geoffrey Toone as Sexton Blake |
 |
Barbara Shelley as Susan |
 |
John Warwick as Cmdr. Chambers |
 |
Jill Melford as Paula Dane |
|
Richard Burrell as Tinker |
|
Reed De Rouen as McGill |
| Writing | Paddy Manning O'Brine | Writer |
| Writing | Peter Saxon | Novel |
| Directing | Francis Searle | Director |
