In this adventure, Tarzan is duped by a pair of jewel thieves headed up by a man who is impersonating the Lord of the Apes' cousin. Believing that he is helping the men on a mission to retrieve diamonds essential to Britain's military success, Tarzan goes, well, ape when he discovers what the con artists are really up to. Lex Barker, Dorothy Hart, Patric Knowles star. 79 min. Standard; Soundtrack: English Dolby Digital mono.