Based on the novel by Agatha Christie In this TV movie, a classic mystery is updated and relocated to a glamorous world of London socialites and secret agents, introducing two unique and compelling investigators and taking us through to the highest corridors of power.

• ITV
• Company Pictures
• Pauline Collins
• Oliver Ford Davies
• Kenneth Cranham
• Jonathan Firth
• Clare Holman
• James Wilby
• Dominic Cooper
• Susan Hampshire