Sam discovers why Kevin entered a bare knuckle fight, as well as uncovering evidence of more foul play in the boxing circuit.
| Name | Type | Role | |
|---|---|---|---|
| John Milne | Writer | ||
| Richard Cole | Guest Star | Solicitor | |
| Barry Jackson | Guest Star | Terence Cross | |
| Ruth Lass | Guest Star | Terri Cross | |
| Frederick Treves | Guest Star | Jack Reeve | |
| Martin Herdman | Guest Star | Barry | |
| Idris Elba | Guest Star | Charlie | |
| John Cater | Guest Star | Captain Rider | |
| Frank Grimes | Guest Star | Keith Jones | |
| Connor McIntyre | Guest Star | Tony Kennedy | |
| Bunny May | Guest Star | Burgess | |
| Julian Jarrold | Director |