The movie centers on botanist Dr. Glendon, whose foray through Tibet in search of a rare night-blooming 'marifasa lupina' ends when he is savagely attacked by man-beast Yogami. After that, the juice of a rare Tibetan flower is the only thing that keeps Dr. Glendon from turning into a werewolf during a full moon.
...a 1935 thriller that's one of the most well-crafted and polished suspense movies of the era. The plot blends new components of the werewolf 'legend' with some science-fictional elements.
