BODY OF THE PREY
From the IMDb: "The credits on the version of this movie which exists today are actually for the movie "Mad Doctor of Blood Island" and bear no relation to this film. This comes from when they were originally intended to be released as a double feature. "Contrary to popular belief, this film was not directed by Kenneth G. Crane, was not made in 1970, was not produced by Toei Company, and was not titled "The Double Garden". It was originally filmed in 1966 as "Body of the Prey" and it was produced and directed by Norman Thomson. Thomson was the popular pulp novelist of the Burns Bannion series,