Jack's father sends him on an urgent mission into the mysteries of his past. Meanwhile, Nikki and Simone investigate a body that seems to hold puzzles of its own.
| Name | Type | Role | |
|---|---|---|---|
| Phil Mulryne | Writer | ||
| Clive Russell | Guest Star | Ezra Jarrett | |
| Chris Anderson | Guest Star | Oliver Meehan | |
| Glynis Barber | Guest Star | Caroline Bergqvist | |
| Declan Rodgers | Guest Star | Bartender | |
| Mark Frost | Guest Star | Iain Jarrett | |
| Lalor Roddy | Guest Star | Eamonn Madigan | |
| Jemma Redgrave | Guest Star | DI Jill Raymond | |
| Rosalyn Wright | Guest Star | Anna Jarrett | |
| Fiona Mulvaney | Guest Star | Care Assistant | |
| Cory Chambers | Guest Star | DS Matthew Quinn | |
| Francesca Henry | Guest Star | Charlie Jarrett | |
| Kate O'Toole | Guest Star | Eleanor Hodgson | |
| Frances Tomelty | Guest Star | Margaret Armstrong | |
| Tracey Larcombe | Director |