On discovering public schoolboy Turlough lost aboard an apparently abandoned cruiser in space, the Doctor (Peter Davison) transmats to Earth in 1983, only to meet up with his old friend friend and UNIT colleague, Brigadier Lethbridge-Stewart, who has apparently lost all memory of him. Back in 1977, Tegan and Nyssa meet the younger Brigadier and a disfigured alien they believe could be a regenerating Doctor. This is all in fact part of a plot to destroy the Doctor by the Black Guardian (last seen in 'The Armageddon Factor'), who has made a deal with Turlough to grant him transportation away from Earth if he kills the Doctor.
We use cookies to help you navigate our website and to keep track of our promotional efforts. Some cookies are necessary for the site to operate normally while others are optional. To find out what cookies we are using please visit Cookies Policy.