รายละเอียด(อย่างย่อ) England, 1651. The Knightmare is a highwayman who is feared in the dark streets of London. With the help of a mysterious assistant, the Knightmare is searching for jewellery from another world -- and comes face to face with the Doctor. Who is the highwayman's companion? Will the Doctor be able to stay away from the gallows and protect the Earth from a terrible enemy? A story based on the original script by Catherine Tregenna ; retold by Chris Rice.