The murder of a probation officer leads the team to the doorstep of a police cadet college, as they quickly establish a link to a similar murder just months before.
| Name | Type | Role | |
|---|---|---|---|
| Tony McHale | Writer | ||
| Roger Ennals | Guest Star | Kris Sherlock | |
| Andrew Falvey | Guest Star | PC Tim Bushell | |
| Esther Hall | Guest Star | Steph Pinson | |
| Chiké Okonkwo | Guest Star | PC Ben Manning | |
| Richard Leaf | Guest Star | Prof Henry Milton | |
| Jack Shepherd | Guest Star | Richard Dyer | |
| Tim Healy | Guest Star | DS Philip Carter | |
| Jack Pierce | Guest Star | Martin Stone | |
| Nicholas Audsley | Guest Star | Alex Dyer | |
| Sian Webber | Guest Star | Sarah Baldwin | |
| Clare Holman | Guest Star | Theresa Dalton | |
| Michael Nardone | Guest Star | PC Shaun Nicholson | |
| Nick Miles | Guest Star | Sergeant Ron Allan | |
| Bob Mason | Guest Star | Thomas Baldwin | |
| Lucinda Dryzek | Guest Star | Cassie Dalton | |
| Terence Corrigan | Guest Star | PC Neil Day | |
| Rebecca Norton | Guest Star | Gabby Langton | |
| Kellie Bright | Guest Star | DC Mona Westlake | |
| Paul Kynman | Guest Star | DI Frank McArdle | |
| Paul Wroblewski | Director |