Now Nevile is in the clear, suspicion has turned on Audrey for the murder of Lady Tresselian.

But no-one can find her, and MacWhirter is convinced she's innocent...

Agatha Christie's whodunit stars Hugh Bonneville.

Dramatised by Joy Wilkinson

Nevile............Hugh Bonneville
MacWhirter.........Tom Mannion
Audrey............Claire Rushbrook
Mary............Julia Ford
Latimer...........Joseph Kloska
Kay............Lizzy Watts
Inspector Leach.......Philip Fox
Royde............Stephen Hogan
Sergeant...........Matt Addis

Director: Mary Peate

First broadcast on BBC Radio 4 in January 2010. Show less