Blake returns from abroad determined to get to the bottom of the mystery of the diamond. He makes a shocking discovery and sets up a re-enactment of the fatal night a year ago. Show more

Sergeant Cuff begins his investigation into the missing diamond, with Betteridge the butler acting as his sidekick. Show more

Doug Lucie's dramatisation of Wilkie Collins's detective masterpiece from 1868, starring Eleanor Bron as Lady Verinder and Kenneth Cranham as Sergeant Cuff. Show more

Sgt Cuff has failed to find either the thief or the Moonstone. In London, Miss Clack, a poor relation of Lady Verinder, takes up the story as Rachel gets engaged. Show more