Watching Magpie Murders is like drinking a double-shot espresso: it’s jolting. Based on a novel by the British mystery writer Anthony Horowitz, the PBS adaptation tells the story of an author, Alan Conway (Conleth Hill), and his editor, Susan Ryeland (Lesley Manville), who awaits his latest manuscript about a detective named Atticus Pünd (Tim McMullan). Conway is found dead, which sends Ryeland searching for his missing pages. With a hall-of-mirrors-style twist, the show offers a parallel track to this modern-day mystery, flashing back and forth to 1950s London, where Pünd is attempting to solve the murder story in Conway’s novel. The best part of this meta detective story? At the end of the labyrinth, viewers can expect a satisfying resolution. —Carolina de Armas