This intriguing story is set in the 1930s at a country house, where two amateur sleuths, Bobby Jones and Lady Frankie Derwent, try to unravel the mystery behind a tale of murder, suspense and false identities. And the only clues the two have to go on are the puzzling last words of a dying man. Featuring characters created by Agatha Christie, Why Didn't They Ask Evans is a classic crime thriller sure to please murder-mystery fans.

• LWT
• ITV
• Francesca Annis
• John Gielgud
• Bernard Miles
• Eric Porter
• Leigh Lawson
• James Warwick
• Madeline Smith
• Connie Booth