This film is incredible in many ways. It has an outlandish story about a scientist who returns from Africa having been presumed lost who has found a botanical secret to growth in humans and other animals through injections of serums made from seedlings brought back from the jungle which he injects into a small chimp he also brings back from Africa that he uses as his primate guinea pig which after several injections(and murders of people standing in the scientist’s way) grows to epic proportions and brings an end to his creator’s dreams. Whew! It has one of the cruelest, unsympathetic protagonists in film, played with aplomb and panache by an overlooked Michael Gough. This man is on cruise control along his evil highway to glory and sexual satisfaction, at one point shooting his house cat at close range rather than have it possibly ruining his scientific discovery. Gough is incredible and his performance is worth a look at the film alone. The other actors are credible and the guy in the ape suit is believable till the last act. Wait till you see this King-Kong sized ape holding Gough and his assistant. When he throws the assistant to the ground, you can tell it is nothing more than a doll! Camp…camp and more camp!