PC Younger arrests a local man on suspicion of poisoning, but he dies in custody after being given a pill. When Carol Cassidy traces a miracle cure to a young herbalist. A radio journalist visits Adensfield and benefits from the town's hospitality.
| Name | Type | Role | |
|---|---|---|---|
| Richard Todd | Guest Star | Harold Beecham | |
| Ralf Little | Guest Star | Stephen Lansbury | |
| Allan Corduner | Guest Star | Tristram Johnstone | |
| Jonathan Kerrigan | Actor | PC Rob Walker | |
| Lisa Kay | Actor | Carol Cassidy | |
| John Duttine | Actor | Sergeant George Miller | |
| David Lonsdale | Actor | David Stockwell | |
| Colin Tarrant | Actor | Roger Parslow | |
| Rita May | Actor | Mrs Nelly Sneddon | |
| Derek Fowlds | Actor | Oscar Blaketon | |
| Vanessa Hehir | Actor | Rosie Cartwright | |
| William Simons | Actor | Alf Ventress | |
| Clare Wille | Actor | DS Rachel Dawson | |
| Tricia Penrose | Actor | Gina Ward | |
| Gwen Taylor | Actor | Peggy Armstrong | |
| Steven Blakeley | Actor | PC Geoff Younger | |
| Peter Benson | Actor | Bernie Scripps | |
| Mark Jordon | Actor | PC Phil Bellamy |