Season
- Season 1 1975-09-06
Episode
- Episode 1: Flames of Doom
- Episode 2: Escape from Ape City
- Episode 3: The Unearthly Prophecy
- Episode 4: Tunnel of Fear
- Episode 5: Lagoon of Peril
- Episode 6: Terror on Ice Mountain
- Episode 7: River of Flames
- Episode 8: Screaming Wings
- Episode 9: Trail to the Unknown
- Episode 10: Attack from the Clouds
- Episode 11: Mission of Mercy
- Episode 12: Invasion of the Underdwellers
- Episode 13: Battle of the Titans
Return to the Planet of the Apes Season 1 Trail to the Unknown
While on a mission, three astronauts in their spaceship get caught in a time vortex. They return to Earth in the year 3979 A.D. and discover that intelligent apes are now the highest form of life.
