A beguiling murder mystery with a solution that will both astonish and shock viewers, the plot of Magpie Murders revolves around the character Susan Ryeland, an editor who is given an unfinished manuscript of author Alan Conway's latest novel, but has little idea it will change her life.

Adapted from Anthony Horowitz's bestselling mystery by the author himself, Magpie Murders stars Lesley Manville (World on Fire, Phantom Thread, Mrs. Harris Goes to Paris) as editor turned amateur sleuth Susan Ryeland and Tim McMullan (Patrick Melrose, Foyle's War) as world-famous detective Atticus Pund.