In a ruined city, Burke and Urko are trapped underground and must reluctantly work together to escape, while Alan and Galen must deal with Urko's gorilla patrol in the streets above.
- Year: 1974
- Country: United States of America
- Genre: Sci-Fi & Fantasy, Action & Adventure, Drama
- Studio: CBS
- Keyword: future, based on novel or book, post-apocalyptic future, time travel, based on movie, primate
- Director: Anthony Wilson
- Cast: Roddy McDowall, Ron Harper, James Naughton, Mark Lenard, Booth Colman