Doctor Who - Season 23 Episode 13 The Ultimate Foe (1)
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…
- Genre: Drama, Action & Adventure, Sci-Fi & Fantasy
- Studio: BBC One, BBC Television
- Keyword: time travel, space, alien
- Cast: Sylvester McCoy, Sophie Aldred