26 Season
694 Episode
Doctor Who - Season 1 Episode 26 The Keys of Marinus
The Doctor and his friends must locate the real murderers and the fourth key before heading off for a final confrontation with the Voord
- 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, C. E. Webber, Donald Wilson
- Cast: Sylvester McCoy, Sophie Aldred