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.

So - Are two heads better than one? Well - I guess you'll just have to watch this truly zany, Sci-Fi flick called "The Manster" to find out the answer to that daunting question.Released in 1962 - The Manster is actually a kinda fun Mad Scientist/Horror movie to watch, providing, of course, that one doesn't take its goofy, far-fetched story at all seriously.I found The Manster to be one of those outrageously low-budget, fright flicks from that particular era that was so bad that, somehow, it was actually (almost) good.I think that it was a very wise move on the part of the director, George Breakston, to see to it that news-reporter Larry Stanford's hideous, two-headed transformation was kept partially concealed within the shadows of near-darkness - Otherwise the intended horror of Larry's horrific predicament would've, I'm sure, been completely lost by a string of unintentional laughs.All-in-all - Even though I would never, ever consider The Manster to be great horror, I still thought that it was a least well-worth one honest viewing.

Mad Japanese scientist Dr. Robert Suzuki (Tetsu Nakamura) hopes to create a serum that will advance human evolution, but all efforts so far have been less than successful, earlier attempts having turned his wife and brother (who apparently volunteered for the experiment, making them just as mad as he is) into hideously deformed monsters.Not one to admit defeat, Suzuki—aided by his glamorous assistant Tara (Terri Zimmern)—gives it one last go, drugging and injecting roving US reporter Larry Stanford (Peter Dyneley) without his knowledge. The serum takes effect gradually, Larry becoming progressively more wild and uncontrollable, first succumbing to the pleasures of booze and geisha girls, but eventually turning to murder. As his personality becomes more monstrous, so does his appearance: his hand gets hairy, an eyeball appears in his shoulder, and he grows a second head, eventually splitting into two separate beings.A wonderfully subversive storyline and a standout central performance from Dyneley help distinguish The Manster from most of its contemporaries; Stanford's insatiable sexual appetite and violent outbursts, Tara's dubious past (I'm guessing that she used to be a hooker), Dr. Suzuki's callous and calculating approach to his 'work', and the unforgettably surreal transformation from man to beast all go to make this film a genuinely freaky and thoroughly enjoyable ride into darker-than-usual 50s B-movie monster territory.7.5/10, rounded up to 8 for IMDb.

***SPOILERS*** When American foreign news reporter Larry Stanford, Peter Dyneley, came to interview renowned Japaneses genetic scientist Dr. Robert Suzuki,Tetsu Nakamura,he didn't quite realize what he was getting himself into. Dr.Suzuki has been secretly experimenting with human beings to improve the human race but has been off a bit from his game-plan lately. The two persons that Dr.Suzuki has experienced with his brother Genji and wife Emiko, Kenzo Kuroki & Toyoko Takechi, have turned into mindless and dangerous mutants! Unknown to Larry he's to be the next person that Dr. Suzuki is planning to experiment on!It's not long after getting himself knocked out with a drug Dr.Suzuki slip on him,in a whiskey shot-glass, that the friendly and good matured Larry starts to turn very anti-social! Even to his best friend fellow foreign reporter Ian Matthews, Norman Van Hanley, and his loyal and loving wife Linda Jane Hyhon. What's even worse Larry starts to get violent fits that in the end leads to him going out at night and killing anyone that he comes in contact with!It's Dr.Suzuki's way to keep Larry in line and under his control by having his pretty assistant Tara, Terri Zimmern, get romantically involved with him. This soon backfires on Dr.Suzuki when Tara refuses to go along with his sick experiment! That despite threats by Dr.Suzuki of sending Tara back to where she came, and from where he rescued her, to the underground white slavery trade.Larry who's has't been feeling that well since Dr.Suzuki drugged him soon gets even worse when he notices an eye that later turned into a head growing out of his right shoulder! This turns Larry into an uncontrollable homicidal maniac and whatever he did before, in murdering innocent people on the streets of Tokyo, is child's play to what he's soon to do next in the movie!Surprisingly good acting that you'd never expect in a film of this type makes the silly storyline far more believable then it would have been. Everyone involved is so natural and sincere, especially Jane Hyhon as Larry's wife Linda, in their acting that it makes it very hard for you to feel that your watching a movie that's ranked among the worst films of all times.***SPOILERS*** The splitting up of Larry Stanford, like an amoeba, towards the end of the movie making him into a both Dr. Jekyll and Mr. Hyde character at the some time was by far the highlight of the film. It also made it very difficult for the local Tokyo Police who to arrest and to hold responsible for the numerous murders committed in the film! Larry Stanford or his evil half the Manster!