Kenneth Cranham as Sergeant Cuff, Paul Rhys as Franklin Blake, Eleanor Bron as Lady Verinder and Steve Hodson as Betteridge star in the second episode of Doug Lucie's dramatisation of Wilkie Collins's detective masterpiece.

Sergeant Cuff begins his investigation into the missing diamond, with Betteridge the butler acting as his sidekick. The once happy household on the Yorkshire coast is thrown into disarray as the servants feel themselves suspected, especially poor Rosanna Spearman who is a reformed thief. Is she guilty just because she behaves oddly and what is it she appears to have hidden in the dreadful quicksand? Sergeant Cuff seems to think the real guilt lies elsewhere but has he any evidence? What is Rachel Verinder hiding as she refuses to speak to either the Detective or even her mother? And where is her Moonstone now? A tragedy is about to happen as the pressure of suspicion mounts.

Cast:
Sergeant Cuff ..... Kenneth Cranham
Lady Verinder ..... Eleanor Bron
Rachel Verinder ..... Jasmine Hyde
Betteridge ..... Steve Hodson
Franklin Blake ..... Paul Rhys
Rosanna Spearman ..... Alison Pettitt
Godfrey Ablewhite ..... Mark Straker
Penelope ..... Clare Corbett
Mrs Yolland ..... Carolyn Pickles

Recorded on location by Lucinda Mason Brown
Music by David Chilton
Dramatised by Doug Lucie

Produced by Janet Whitaker
A Goldhawk Essential production for BBC Radio 4. Show less