Dempsey becomes obsessed with catching a tough guy called Keith Lymon. Makepeace thinks it's because the two men are different sides of the same coin.
| Name | Type | Role | |
|---|---|---|---|
| Ranald Graham | Writer | ||
| Timothy Block | Guest Star | ||
| Garry Roost | Guest Star | ||
| Linal Haft | Guest Star | ||
| Suzie Cerys | Guest Star | ||
| Michael Balfour | Guest Star | ||
| Nick Brimble | Guest Star | ||
| Phil Murray | Guest Star | ||
| John Blythe | Guest Star | ||
| Terry Downes | Guest Star | ||
| Tony Wharmby | Director |