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Following the events in "Beneath the Planet of the Apes", Cornelius and Zira flee back through time to 20th Century Los Angeles, where they face persecution similar to what Taylor suffered in the future, and discover the origins of the stream of events that will shape their world.

Directed by: Don Taylor
The cast includes: Roddy McDowall (Cornelius), Kim Hunter (Dr. Zira), Bradford Dillman (Dr. Lewis Dixon), Natalie Trundy (Dr. Stephanie Branton/Stevie), William Windom (The President), Sal Mineo (Dr. Milo), Ricardo Montalban (Armando)
MPAA rating: , Running time: 98 minutes
Presented in: Color
Related titles: Planet of the Apes (1968), Beneath the Planet of the Apes (1970), Conquest of the Planet of the Apes (1972), Battle for the Planet of the Apes (1973)
Related categories: End of the World, Time Travel, Other Dimensions, and Alternate Realities