Two astronauts land on a planet populated by apes, but these chimps are no chumps and the men find themselves imprisoned and at the mercy of their furry captors. The enigma of the planet's history, juggled through Heston's humiliating experience of being studied as an interesting laboratory specimen by his ape captors, right down to his final startling rediscovery of civilisation, is quite beautifully sustained. One interesting fact is that the aristocratic orangutan Dr. Zaius was originally to find out more...