The operation against Callard builds to its conclusion as Murphy is hired to help complete a shipment of Afghan heroin into England. His undercover work could help secure the conviction, but Murphy's presence is demanded elsewhere, as a key prosecution witness in the High Court.
| Name | Type | Role | |
|---|---|---|---|
| Allan Cubitt | Writer | ||
| Sara Powell | Guest Star | ||
| Maggie Lloyd-Williams | Guest Star | ||
| Jonathan Finlay | Guest Star | ||
| Mark Womack | Guest Star | ||
| Robyn Kerr | Guest Star | ||
| Georgia Mackenzie | Guest Star | ||
| Peter Harding | Guest Star | ||
| Kayvan Novak | Guest Star | ||
| Michael Bertenshaw | Guest Star | ||
| Larry Lamb | Guest Star | ||
| Caroline Lee-Johnson | Guest Star | ||
| Shaun Dooley | Guest Star | ||
| Mo Sesay | Guest Star | ||
| Jay Kilbey | Guest Star | ||
| James Barriscale | Guest Star | ||
| Daniel Betts | Guest Star | ||
| Michael Feast | Guest Star | ||
| Richard Standeven | Director |