Return to the Planet of the Apes - Season 1 - Eps 5: Lagoon of Peril
The Simian Senate is holding a top-secret session debating the possibility of intelligent humans after one of Urko's soldiers returns, delirious from the Forbidden Zone.
About Return to the Planet of the Apes

Title: Return to the Planet of the Apes
First Air Date: 1975-09-06
Last Air Date: 1975-11-29
Status: Ended
Rating: 6.643/10 (from 56 votes)
Language: EN
Seasons: 1
Total Episodes: 13
Network: NBC
Genres: Sci-Fi & Fantasy, Animation
Production Companies: DePatie-Freleng Enterprises, 20th Century Fox
Synopsis
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.
Cast

Austin Stoker
Jeff Allen (voice)

Philippa Harris
Dr. Zira (voice)

Henry Corden
General Urko (voice)

Richard Blackburn
Dr. Zaius (voice)

Edwin Mills
Dr. Cornelius (voice)

Claudette Nevins
Nova / Judy Franklin (voice)

Tom Williams
Bill Hudson (voice)