When Mr. Whicher, a retired policeman, helps a country lady to find her niece, he is drawn into a disturbing case of murder which brings him up against wealthy and powerful figures and throws him into conflict with his former police colleagues.
| Actor | Role |
|---|---|
 Paddy ConsidineMr. Whicher | Mr. Whicher |
 Olivia ColmanSusan Spencer | Susan Spencer |
 Paul LongleyConstable | Constable |
 Andy GathergoodSergeant Parker | Sergeant Parker |
 William BeckChief Inspector 'Dolly' Williamson | Chief Inspector 'Dolly' Williamson |
 Tim Pigott-SmithCommissioner Mayne | Commissioner Mayne |
| JJames WilsonPickpocket Youth | Pickpocket Youth |
 Shaun DingwallInspector George Lock | Inspector George Lock |
 Angela TerenceCharlotte | Charlotte |
 Christopher HarperDr. Beattie | Dr. Beattie |
 Justine MitchellSister Anne | Sister Anne |
 Justin EdwardsReverend Marlow | Reverend Marlow |
| MMark KempnerToby Boyle | Toby Boyle |
 Brett AllenLandlord | Landlord |
| TTom PadleyPub Bystander | Pub Bystander |
 Neal BarryFinch | Finch |
 Billy PostlethwaiteStephen Gann | Stephen Gann |
 Mark BazeleyThomas Gann | Thomas Gann |
 Alistair PetrieDr. Casement | Dr. Casement |
| SSean BakerJoshua Gann | Joshua Gann |
| SSam BarnardRobert | Robert |
| JJody HalseClarence Shaw | Clarence Shaw |
| CCarolyn TomkinsonCreed's Woman | Creed's Woman |
| NNick CaldecottDr. Drake | Dr. Drake |