A shapeshifter is loose on Skybase. It can assume the shape of anyone it touches. Can Spectrum track it down before it manages to take over? Episode Rating: Starring: Colonel White, Captain Scarlet, Captain Blue, Captain Ochre, Captain Grey, Lieutenant Green & Destiny, Harmony, Melody & Rhapsody Angel With appearances from: Captain Magenta. Written by Phil Ford Directed by David Lane Animated by Scarlet team Transmission date: 12 November 2005 Appears on DVD 4