During a holiday by the British seaside, Hornleigh and Bingham grow bored and turn their hand to investigating a local crime.
| Actor | Role |
|---|---|
 Gordon HarkerInspector Hornleigh | Inspector Hornleigh |
 Alastair SimSergeant Bingham | Sergeant Bingham |
 Linden TraversMiss Angela Meadows | Miss Angela Meadows |
 Wally PatchPolice Sergeant | Police Sergeant |
 Edward ChapmanCaptain Edwin Fraser | Captain Edwin Fraser |
 Philip LeaverBradfield | Bradfield |
 Kynaston ReevesDr. Manners | Dr. Manners |
 John TurnbullChief Constable | Chief Constable |
 Wyndham GoldieSir George Winbeck | Sir George Winbeck |
| CCyril ConwayMinor Role | Minor Role |