Last updated 02 January 2017
Broadcast: Thursday 10th March 2016
11:00pm-11:30pm EST (04:00 GMT) « »
Featuring: Tom Baker, Sarah Sutton, Matthew Waterhouse, Anthony Ainley, Geoffrey Beevers
The Keeper of Traken is nearing the end of his long reign. Fearing a terrible evil is about to threaten the peace and harmony of his world, he requests the Doctor's help.
Synopsis Source: Doctor Who Guide
Broadcast Source: Retro TV