From the team behind cult classic The League of Gentlemen, this bizarre gothic 7 part comedy series sees a chain of events triggered when a mysterious masked stranger contacts 5 seemingly disparate characters with the chilling message: 'I know what you did'. An embittered hook-handed clown, a misguided midwife, a lovestruck dwarf, a blind collector and a murder-obsessed man-child: all are affected in differently by the letters, and their already bizarre lives are hilariously turned on their heads. The characters are forced to confront what happened to them in the past and the secret that binds them together.