Two rival gangs are trying to fix horse races and a jockey is attacked and left for dead in a stage-managed car crash. An insurance investigator makes routine enquiries into the "accident" and one of the gang leaders feels threatened by this and takes counter measures.
| Directing | Robert Tronson | Director |
| Production | Jack Greenwood | Producer |
| Sound | Ronald Abbott | Sound Recordist |
| Writing | Lukas Heller | Screenplay |
| Directing | Marjorie Owens | Continuity |
| Production | Jim O'Connolly | Associate Producer |
| Sound | Roy Norman | Sound Editor |
| Sound | Bernard Ebbinghouse | Original Music Composer |
| Editing | Derek Holding | Editor |
| Costume & Make-Up | Hilda Fox | Hairdresser |
| Sound | Sidney Rider | Sound Recordist |
| Camera | Bert Mason | Director of Photography |
| Writing | Edgar Wallace | Novel |
| Directing | Ted Lewis | Assistant Director |
| Camera | Herbert Smith | Camera Operator |
| Art | Peter Mullins | Art Direction |
| Costume & Make-Up | Aldo Manganaro | Makeup Artist |
| Production | Ronnie Curtis | Casting |
