Mad scientist Tetsu Nakamura has a couple of failed experiments on his brother and wife turning them into mutants while studying evolution. Conveniently, journalist Peter Dyneley stops up to his cabin laboratory hidden on top of a volcano to do an interview and the "good" doctor seizes on the opportunity to try again. After drugging him, Nakamura injects him with the experimental serum and then uses his ravishing assistant Terri Zimmern to lead Dyneley astray into a life of drunken binges and Geisha girls giving the serum time to take effect. Dyneley eventually evolves into a murderous two-headed Neanderthal. Only worth viewing for its camp value.
Review of Manster
