Sam uncovers a crippling truth about her involvement in a 13-year-old case -did she help convict an innocent man?
| Name | Type | Role | |
|---|---|---|---|
| Michael Crompton | Writer | ||
| Edward Petherbridge | Guest Star | Professor Lewis Freeman | |
| Alex McSweeney | Guest Star | DS Rufus Smith | |
| Shelley King | Guest Star | Suchvinder Juttla | |
| Ashley Jensen | Guest Star | DI Becky Metcalf | |
| Christopher Mellows | Guest Star | Paul Bearman | |
| Annabelle Apsion | Guest Star | Jayne Rooke | |
| Martin Lawton | Guest Star | Judge Geoffrey Lloyd | |
| Tim Plester | Guest Star | Bruce Owen | |
| Claire Askam | Guest Star | Josie Grey | |
| Eva Birthistle | Guest Star | Lauren Hathaway | |
| Mark Frost | Guest Star | DS Paul Baxter | |
| Michael Bertenshaw | Guest Star | Peter Whitaker QC | |
| Dorian Healy | Guest Star | Det Supt. Colin Foster | |
| Zoë Aldrich | Guest Star | WPC Denise Guthrie | |
| Cal MacAninch | Guest Star | Michael Patterson | |
| Judy Loe | Guest Star | Nina Taylor QC | |
| Tracey Murphy | Guest Star | Gemma Stevens | |
| Christopher Hunter | Guest Star | The Dean | |
| Nick Malinowski | Guest Star | Dan Ricketts | |
| Renny Rye | Director |