Transmitted originally: 1 September 1979 to 22 September 1979.
He quickly deduces that the battle computers of the two opponents are locked in a logical stalemate and that he can break this by introducing the element of intuition into the Daleks. The Movellans, having reached the same conclusion, want the Doctor to do likewise for them. Davros attempts to destroy the Movellan ship using a suicide squad of Daleks, loaded with bombs, but the Doctor returns to the Kaled city and tricks him into detonating the bombs early. The Movellans are deactivated and Davros is cryogenically frozen on board their ship until the freed slave workers can take him to Earth and ensure he is tried for his crimes.
Romana 'tries on' three alternative bodies before choosing her eventual new form. The alternative Romanas were played by Lee Richards, Maggy Armitage and Yvonne Gallagher.
Romana wears a pink and white parody of the Doctor's costume.