The blood of a primitive fish exposed to gamma rays causes a benign research professor to regress to an ape-like, bloodthirsty prehistoric hominid.

Please note, all our download links are hosted by FileFactory. They are free to download if you don't mind putting up with their ads. If you'd like faster speeds or to avoid the annoying ads, we'd strongly recommend signing up for a File Factory Premium account - super-fast, unlimited, and ad-free downloads for 30 days.