War of the Colossal Beast

Glenn Manning (Duncan 'Dean' Parkin), the giant everyone saw fall from the Hoover Dam, is presumed dead until reports of a hulking, disfigured figure come out of rural Mexico. Bert I. Gordon, who made the first film, sends Major Mark Baird (Roger Pace) south to learn whether the thing is really him. Joyce Manning (Sally Fraser), his sister, joins the search, unsure she wants to find what her brother has become.