The ABC Murders
by Sarah Phelps; dir. Alex Gabassi (BBC, 2018)
A decidedly uncosy three-part miniseries that re-characterises Poirot from sprightly, upbeat master of all situations to inscrutable, world-weary has-been. John Malkovich is very good in the role but Agatha Christie purists may not appreciate the tonal shift (let alone the altered backstory).