When Detective Murdoch's friend and protege, Constable Oliver Wicken, is found shot to death in the basement of an abandoned house, the constabulary rule it as suicide. Murdoch is determined to prove it was murder and clear Wicken's name.
| Name | Type | Role | |
|---|---|---|---|
| Colm Meaney | Actor | Inspector Brackenreid | |
| Philip Graeme | Actor | Constable Oliver Wickham | |
| Keeley Hawes | Actor | Dr. Julia Ogden | |
| Flora Montgomery | Actor | Ettie Weston | |
| Matthew MacFadzean | Actor | Constable George Crabtree | |
| Peter Outerbridge | Actor | Detective William Murdoch | |
| Chang Tseng | Actor | Sam Lee |