An old flame of Eileen's turns up. He is a French man named Antonin, who urges Eileen to marry him. She declines because of her commitment to Katie. Nick goes undercover as a harbour worker to catch an escapee prisoner. Phil goes missing during the operation and is found trapped on one of the boats. Claude is buying fish under false means, Nick notices what's going on and advises him to stay away from Whitby - which is where the investigation is taking place.
| Name | Type | Role | |
|---|---|---|---|
| Ron Rose | Writer | ||
| Ken Horn | Director | ||
| Juliette Gruber | Actor | Jo Weston | |
| Nick Berry | Actor | PC Nick Rowan | |
| Ian Blower | Actor | Bill Thompson | |
| Kazia Pelka | Actor | Maggie Bolton | |
| Keith Ladd | Actor | Mr Smith | |
| Robert Langdon Lloyd | Actor | Antonin Clarion | |
| Bill Maynard | Actor | Claude Jeremiah Greengrass | |
| Ava Hunt | Actor | Anne Thompson | |
| Stuart Golland | Actor | George Ward | |
| Tony Nyland | Actor | Fishmonger | |
| Kenneth MacDonald | Actor | Inspector Jennings | |
| Derek Fowlds | Actor | Sergeant Blaketon | |
| Gordon Kane | Actor | Penrice | |
| Tricia Penrose | Actor | Gina Ward | |
| Rachel Pierman | Actor | Barmaid | |
| Nick Wyatt | Actor | Ronnie Savage | |
| William Simons | Actor | PC Ventress | |
| Ruth Kettlewell | Actor | May | |
| Anne Stallybrass | Actor | Eileen | |
| Laura Cox | Actor | Brenda Savage | |
| Mark Jordon | Actor | PC Bellamy | |
| Lesley Duff | Actor | Mrs Smith |