Dr. Brewster's sister shows up when she learns of her brother's disappearance and subsequently learns that his disappearance was a fake and that he has transformed himself into a man - ape by his experiments. At the same time Billie Mason gets herself a job at the newspaper and is teamed up with another reporter by the name of Jeff Carter. Soon Doc Brewster needs human spinal fluid to transform himself back into his human form, but no one will help him because the extraction of the fluid will kill whomever it is being drawn from. But the doc eventually takes matters into his own hands which lets Mason and Carter uncover what is really happening at the doctor's residence. This was a pretty cool little horror flick that Bela made many years ago. Atmospheric, a little suspenseful and a wee bit funny this film, though not one of Bela's best, was pretty good and is very enjoyable. The acting was as solid as you would expect in a film of this caliber, but by no means did this film stink. In fact it was actually quite pleasant.