After botanist Wilfred Glendon (Henry Hull) travels to Tibet in search of a rare flower, he returns to a London haunted by murders that can only be the work of bloodthirsty werewolves.
After botanist Wilfred Glendon (Henry Hull) travels to Tibet in search of a rare flower, he returns to a London haunted by murders that can only be the work of bloodthirsty werewolves.