In the first case for new recruit Adam, the murder of a swimming instructor leads the team to suspect her ex-boyfriend, a former cop. Jack has an unexpected visitor.
| Name | Type | Role | |
|---|---|---|---|
| Susan Everett | Writer | ||
| Carryl Thomas | Guest Star | Sally Trask | |
| Jack Deam | Guest Star | Frank Johnson | |
| Lolly Jones | Guest Star | Laura Jennings | |
| Lewis Gribben | Guest Star | Simon Morton | |
| Owen McDonnell | Guest Star | Ryan Kelvin | |
| Keir Charles | Guest Star | Michael Trask | |
| Lucy Sheen | Guest Star | Jessica Walker | |
| Patrick Baladi | Guest Star | Ron Radford | |
| Ann Mitchell | Guest Star | Molly Trask | |
| Bill Blackwood | Guest Star | John Jennings | |
| Richard Durden | Guest Star | Conor Hodgson | |
| Caroline Sheen | Guest Star | DI Meredith Hughes | |
| Sandra Maitland | Guest Star | Patricia Jennings | |
| Delyth Thomas | Director |