A sinister crook is implicated in blackmail, greed for emeralds, a secret formula and murder. Thee episodes from a 1952 British television series called "Inspector Morley, Late of Scotland Yard, Investigates" were joined together and released theatrically.
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| Sound | W.L. Trytel | Music |
| Production | Gilbert Church | Producer |
| Directing | Victor M. Gover | Director |
| Art | Don Chaffey | Art Direction |
| Editing | Helen Wiggins | Editor |
| Writing | John Gilling | Writer |
| Costume & Make-Up | Harry Webber | Makeup Artist |
| Sound | Peter Birch | Sound Recordist |
| Camera | S.D. Onions | Director of Photography |
| Directing | Gladys Reeve | Continuity |
| Directing | John Workman | Assistant Director |
