thankfully you do not need a lot of book learnin to understand where this thing go . obviously a poverty row cash in on universal big hit the wolf man ( which be make just one year earlier ) and this find the always watchable george zucco in another of his patented mad doctor role a brilliant and vengeance mind scientist lorenzo cameron . cameron and who have set up shop deep in the swamp land of what i be presuming be the louisiana bayou and be plot revenge against four of his former peer who both humiliate him and force him to resign from his previous job . you see and they scoff at his claim of be able to mix man with beast to create an unstoppable army of wolfman creature that would come in handy during war time . thankfully cameron have find the ideal test subject for his wolf blood injection a hulking and child like half wit name petro ( glenn strange ) . petro be pretty clueless a to what go on and doesn not ask too many question and let the doc strap him down to a table and shoot him up with whatever happens to be in his syringe . this result in a time lapse change of man turn into a werewolf . cameron let him out of the mansion use a secret passageway and so you basically get a big guy ( strange be 65 ) dress in overall with a bushy beard and hairy paw and a set of over sized plastic teeth and run around in the wood the majority of the time . after an eyewitness see the beast and a little girl be kill and the local grab their rifle and organize a posse to hunt it down . dr. cameron and who can control the beast with a whip and also have a handy antidote to reverse the effect and also drags petro along to the big city to try to track down the professor who have make a mockery of his original theory and destroy his reputation in the process . also hang around the house be cameron daughter lenora ( anne nagel ) and as well a lenora nosy reporter boyfriend tom ( johnny down ) and whose first inclination be that theyre deal with an upright walking prehistoric creature ( . ) though a typically chintzy prc flick in many way and with unimpressive set and cinematography and make ups and as well a a fairly bland support cast and it remain watchable thanks to the histrionics of star george zucco . i have no clue why down receive top billing while he show up half an hour in and really doesn not have a whole lot to do and nor be he all that impressive do it . this be zucco show all the way and he great ranting and raving and talk to himself while fantasize that he talk to his peer ( i be not interested in your imbecilic mouthings . ) and temporarily slide in and out of sanity . strange seem to have pattern his performance a the hilariously naive and slow talk semi retard country bumpkin around the entire oeuvre of lon chaney jr. and from his turn a lenny in of mouse and men and to his performance a the aforementioned wolf man . in any case and strange and zucco do a fairly good job play off one another . my favorite part be when zucco call him his guinea pig in front of a colleague while petro just sit there grin and star at a doorknob . some of the foggy swamp scene be pretty atmospheric and too .