The Ultimate Foe (1)
Show: Doctor Who --> Season: 23 - The Trial of a Time Lord
AirDate: 11/29/1986
Runtime: 25
Voting: 5.8 (5)

Overview: The Valeyard's true identity is revealed and the trial aborted, but the Doctor and Mel must pursue his new enemy into the Matrix itself, where nothing is quite what is seems…
Lynda Bellingham
The Inquisitor
Michael Jayston
The Valeyard
Anthony Ainley
The Master