A haughty Professor becomes intent on proving that mankind's gradual evolution did not necessarily affect his quotient of intelligence. Despite the distinguished directorial credit, this is a thoroughly routine horror programmer of the 'mad scientist' variety, with more than its fair share of unintended hilarity amid the general tackiness. In fact, I would go so far as to say that, as played by Robert Shayne, the doctor here is the rudest in film history and watching him let rip with insults at his staid, disapproving colleagues was a hoot! Typically for this sort of fare, the all-important serum is first tested on animals or 'lesser' humans – in this case, a perennially terrified domestic cat is turned into a saber-toothed tiger and a mute servant girl into a bushy-eyebrowed ape woman (albeit, apparently, just long enough for her to sit for some photographic evidence of the veracity of his claims) – before applying it to himself. The proverbial redneck hostility to a marauding tiger preying on their livestock and later a simian kidnapper of women is present and accounted for; what is more surprising is that the middle-aged professor has a good-looking and much younger fiancée who still relishes hopes of dragging him from his laboratory off to a church altar and, naturally, once the young urban expert hero comes along, he falls for the charms of the professor's clueless daughter. The TNT-culled print I watched left an awful lot to desire so, in spite of my reservations, I acquired a superior copy of the film the minute it was over!