Werewolf of LondonDespite warnings that the region is dangerous, Botanist Wilfred Glendon (Henry Hull) travels to Tibet in search of the "Marifasa Lupina", a rare flower which blooms only in moonlight. Back in London, Glendon is visited by the enigmatic Dr. Yogami (Warner Oland), who tells him that a current rash of murders is the work of two werewolves. Yogami also claims that the only antidote is the blooming Marifasa flower, which keeps the werewolves from harming the ones thy love. Glendon scoffs at Yogami's stories, until the next full moon!She-Wolf of LondonThe citizens in turn-of the-century London are terrified and Scotland Yard is babbled by a mysterious string of bloody killings in the city's most infamous park. In a nearby estate Phyllis Allenby (June Lockhart) fears that the "Allenby Curse" which led to the death of her parents has now turned her into a "she-wolf". Haunted by dreams of mayhem and worried she's going insane, Phyllis breaks off her engagement with her fiance (Don Porter). Determined to prove that the woman he loves couldn't be a murderess, he sets out to unmask the real killer.