Disturbed by the time travel experiments of the evil Dastari and Chessene, the Time Lords send the second Doctor and Jamie to investigate. Arriving on a station in deep space, they are attacked by a shock force of Sontarans and the Doctor is left for dead.

Across the gulfs of time and space, the sixth Doctor discovers that his former incarnation is very much alive. Together with Peri and Jamie he must rescue his other self before the plans of Dastari and Chessene reach their deadly and shocking conclusion...

LONDON IN THE 1880s... A master of illusion and hypnotism performing in a Victorian music hall. A ventriloquist's dummy that can kill. A masked figure desperately searching for something not of this time. The Doctor and his companion Leela are soon embroiled in another perilous adventure. Read for the first time the complete script of this classic Doctor Who story, together with never-before published background and technical information.