An embittered one-handed clown; a desperately misguided midwife; a lovestruck telekinetic dwarf; a blind avaricious collector; and a serial-killer-obsessed man-child… five seemingly unconnected characters share one thing in common.

Despite coming from different parts of the country and having different backgrounds and interests, each one has been sent an anonymous, black-edged card bearing the chilling message: “I know what you did…”

Having created the kind of northern town that nightmares are made of, The League Of Gentlemen’s Reece Shearsmith and Steve Pemberton return to BBC Two with a spine-tingling, jaw-dropping, thrilling comedy serial. Like the best whodunnits, each episode draws viewers deeper and deeper into the kind of world that only Reece and Steve could dream up.