The Anchor-Ferrers arrive at their Monmouthshire home, only to be met by a gruesome surprise. In London, DI Jack Caffery receives a clue that could lead him to their rescue.
| Name | Type | Role | |
|---|---|---|---|
| Megan Gallagher | Writer | ||
| Amanda Drew | Guest Star | Superintendent Driscoll | |
| Anthony Webster | Guest Star | Ivan Penderecki | |
| George Russo | Guest Star | D.I. Richards | |
| Caroline Berry | Guest Star | Doctor Diaz | |
| Kezia Burrows | Guest Star | Veronica | |
| Tim Treloar | Guest Star | The Walking Man | |
| Kristoffer Nyholm | Director |