Based on the bestselling crime novel of all time by Agatha Christie, this "TV event of the year" (The Guardian, UK) boasts an all-star cast also including Aidan Turner (Poldark), Anna Maxwell Martin (The Bletchley Circle), Toby Stephens (Black Sails), Burn Gorman (TURN: Washington's Spies), Noah Taylor (Peaky Blinders), and Douglas Booth (Great Expectations).