Sam challenges the police after an indepenedent postmortem into McNally's apparent suicide. Further deaths take place.
| Name | Type | Role | |
|---|---|---|---|
| Peter Lloyd | Writer | ||
| Bruce White | Guest Star | C.I.B. Officer | |
| Isobel Middleton | Guest Star | Helen McNally | |
| Lee Turnbull | Guest Star | Todd | |
| Nicholas Palliser | Guest Star | Dr. Jack Urwin | |
| Oliver Squires | Guest Star | Liam Brock | |
| Aden Gillett | Guest Star | D.I. Stuart Lightfoot | |
| Peter Jonfield | Guest Star | Tony Georghiou | |
| David Lyon | Guest Star | Det. Supt. Alfred Kempster | |
| Patrick Cremin | Guest Star | D.I. Barry Adair | |
| Tom Georgeson | Guest Star | Brian McNally | |
| Kelly Wright | Guest Star | Stevie | |
| Nigel Cooke | Guest Star | Dr. Podmore | |
| Mark Montgomerie | Guest Star | Nicky | |
| Victoria Scarborough | Guest Star | D.S. Carole Cashman | |
| Bill Thomas | Guest Star | Old Man | |
| Mark Brignal | Guest Star | Joe Skellern | |
| George Russo | Guest Star | Danny | |
| Osmund Bullock | Guest Star | Dr. Ivor Williams | |
| Richard Signy | Director |