Killer Ape 1953 is the twelfth Jungle Jim film produced by Columbia Pictures. It features Johnny Weissmuller in his twelfth performance as the protagonist adventurer Jungle Jim. The film was directed by Spencer G. Bennet and written by Arthur Hoerl and Carroll Young.
Noticing many jungle animals behaving in an unnatural manner, adventurer Jungle Jim Johnny Weissmuller sends a few of them for laboratory testing. It is revealed that diabolical scientist Doctor Andrews Nestor Paiva is behind the deed. Andrews is intent on formulating a deadly drug that would make any creature injected with it succumb in a matter of seconds. Jim, who is unaware of Andrews plans, spots him near the Canyon of the Man Ape. The jungle explorer advises him to leave quickly, as rumour has it that a creature Max Palmer, halfman and halfape, roams the canyons grounds. Andrews does not heed the warning, and his laboratory in the jungle gets obliterated by the legendary Killer Ape.Jungle Jim later meets Mahura, leader of the tribal Wazuli clan. Jim also warns him of the Killer Ape, but Mahura wishes to see it for himself to believe him. He ventures into the canyon, and meets the enraged monster in the flesh. Jim comes to Mahuras aid but is knocked out cold by the beast. The Killer Ape proceeds to kill the tribal chief. Shari Carol Thurston, Mahuras daughter, and Ramada Burt Wenland, Sharis spouse, both accuse Jim of murdering Mahura. When Jim vehemently denies doing so, a heated squabble ensues. Jim sneaks away but is chased by Shari. Just then, the Killer Ape reappears and tries to kill Shari, only to be scared off by Jim. ........
Source: Wikipedia