Regan lures Bishop, a prize crook, back into the country using the villain's favourite dog as bait.
| Name | Type | Role | |
|---|---|---|---|
| Troy Kennedy Martin | Writer | ||
| Peter Jeffrey | Guest Star | Pringle | |
| Brian Wilde | Guest Star | Stanley | |
| Brian Glover | Guest Star | Moose | |
| Alfred Marks | Guest Star | Bishop | |
| Tom Clegg | Director | ||
| Margaret Nolan | Actor | Betty | |
| John Thaw | Actor | Regan | |
| Ivan Beavis | Actor | Sergeant | |
| Dennis Waterman | Actor | Carter | |
| John Flanagan | Actor | Mathews | |
| Bridget Brice | Actor | Secretary | |
| Morris Perry | Actor | Chief Superintendent Maynon | |
| Garfield Morgan | Actor | Haskins | |
| Maurice O'Connell | Actor | Morgan | |
| Robert Gillespie | Actor | Steward | |
| Martin Read | Actor | Thorpe | |
| Tony Aitken | Actor | Shipping Clerk | |
| Bill Dean | Actor | Charlie Norton |