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.
| Actor | Role |
|---|---|
 Jack HedleyJim Mathews | Jim Mathews |
 Jacqueline EllisMarion Parker | Marion Parker |
 Patrick MageeBen Black | Ben Black |
 Richard WarnerMr. Crabtree | Mr. Crabtree |
 Larry MartynClive Parker | Clive Parker |
 Derek FrancisR. R. Harris | R. R. Harris |
 Austin TrevorCol. Warburton | Col. Warburton |
 Harry LockeMr. Burnside | Mr. Burnside |
 George ToveyWally Sanders | Wally Sanders |
| HHilda BarryMrs. Sanders | Mrs. Sanders |
 Howard PaysFreddie | Freddie |
| LLarry TaylorReilly | Reilly |
 Harold GoodwinFloyd | Floyd |
| DDouglas Bradley-SmithMr. Carter | Mr. Carter |
| GGeorge HilsdonJack | Jack |
 Tenniel EvansDoctor | Doctor |
| FFanny CarbyCharwoman | Charwoman |
| SStanley MorganPolice Sergeant | Police Sergeant |
| AAstor SklairPolice Officer | Police Officer |
| KKenneth MidwoodPolice Officer | Police Officer |
| FFreddie FowlerJockey's Valet | Jockey's Valet |