acclaimed bbc adaptation of agatha christie's thriller set amidst a toxic, dysfunctional family. Billy nighy, eleanor tomlinson, matthew goode and anna chancellor star. Heiress rachel argyll is murdered at her family estate. Eighteen months later, the identity of the murderer is thrown in doubt.   rachel argyll, the wealthy mother of five adopted children, is found bludgeoned to death in her bedroom. One of her sons, jack, is accused of her murder and arrested. Eighteen months later, jack has died in prison, and rachel’s husband, leo, is marrying his former secretary. The four remaining argyll children are processing their feelings about their various losses, and about their grasping and highly strung stepmother to be, when a stranger shows up at the house insisting that jack was innocent, with an alibi to prove it. Adapted by sarah phelps for the bbc.   release date  18th feb 2019