D.C.S. Walker goes on leave back to Glasgow, where he is taking care of his increasingly senile mother, he soon becomes involved in the case of a missing woman, who is the sister of an old friend. Walker begins to delve into the life of her then husband Kevin Reid, and discovers a dark bond between him and his brother Ronnie. Soon a body is discovered and is it is proved to be the missing woman. Then Kevin's second wife is reported missing - convincing Walker that one or both of the Reid brothers are involved in the crimes.
| Name | Type | Role | |
|---|---|---|---|
| Lynda La Plante | Writer | ||
| Alex Pillai | Director | ||
| Victoria Gay | Actor | Anna Reid | |
| Robert Willox | Actor | Bill Hennessy | |
| Mike Hayley | Actor | DI Ringham | |
| Kerry Fox | Actor | DI Moyra Lynch | |
| Rebecca How | Actor | Margaret | |
| Judy Loe | Actor | Eileen Banks | |
| Claire Brown | Actor | Nurse | |
| Jamie Sives | Actor | Kevin Reid | |
| Sheila Donald | Actor | Mrs. Walker | |
| David Hayman | Actor | Det.Ch.Supt Mike Walker | |
| Nitin Ganatra | Actor | Jaheed Jeffers | |
| Michael Nardone | Actor | Ronnie Reid | |
| Ryan Kiggell | Actor | DC Jeffrey Dobbs | |
| Dorian Lough | Actor | DS David Satchell | |
| Alicia Devine | Actor | Megan | |
| Gugu Mbatha-Raw | Actor | Jenny Miller | |
| Roger Martin | Actor | Dr Julian Holmes | |
| David O'Hara | Actor | DI Jack Mullins |