Agatha Christie’s 1961 novel The Pale Horse has been adapted into a two-part television series written by Sarah Phelps and directed by Leonora Lonsdale. Starring Georgina Campbell, Kaya Scodelario, and Rufus Sewell, the story begins with the murder of a priest soon after hearing a woman’s deathbed confession, and leads to an old pub inhabited by a mysterious trio of women, rumored to be witches.