26 Season
694 Episode
Doctor Who - Season 1 Episode 17 The Wall of Lies
The Doctor's group manage to rescue Barbara from the Mongols but once more Marco remains unaware of Tegana's involvement.
- Year: 1989
- Country: United Kingdom
- Genre: Drama, Action & Adventure, Sci-Fi & Fantasy
- Studio: BBC One, BBC Television
- Keyword: time travel, space, alien
- Director: Verity Lambert, Sydney Newman, Donald Wilson, C. E. Webber
- Cast: Sylvester McCoy, Sophie Aldred