Part ThreeSeries Episode Number: 476
World Premiere: Sat 18 Feb 1978 - 6:24pm GMT [BBC One] (United Kingdom)
First Broadcast: Wed 13 Feb 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 25 minutes
9.50 Million (UK)
Chart Position: 47 () (UK)
Recorded on Sun 06 Nov 1977 in TC8
The Doctor has betrayed his own people and enabled a Vardan invasion of Gallifrey. Leela joins forces with the Outsiders and prepares to strike back against the aliens.