- Released on May 13, 1935
- Running time: 75 minutes
- Production and Distribution Co.: Universal Pictures
- Directed by Stuart Walker
- Written by John Colton (screenplay), from a story by Robert Harris, adaptation by Harvey Gates and Robert Harris (uncredited), Edmund Pearson (contributing writer) (uncredited)
- Starring: Henry Hull, Warner Oland, Valerie Hobson
- After botanist Wilfred Glendon travels to Tibet in search of a rare flower, the Mariphasa, he returns to a London haunted by murders that can only be the work of bloodthirsty werewolves.
- Beware! Terror strikes in the night!
- Your eyes will behold what your mind would never believe. By day a respected doctor! By night a Human Wolf! (Print Ad-Lodi News, ((Lodi Calif.)) 19 June 1935)
- HAIR COVERED HIS FACE AND BODY-HIS TEETH TURNED TO FANGS-AS SLOWLY SOME MYSTERIOUS POWER CHANGED THE MAN SHE MARRIED INTO A WEREWOLF! (Print Ad- Victoria Daily Times, ((Victoria, BC))13 August 1935)
- Beware the Stalking Being - Half-Human - Half-Beast!
- Hideous Half Man, Half Beast Who Terrorized Millions!