Henry Hull, Warner Oland, Valerie Hobson, Lester Matthews, Lawrence Grant, Spring Byington, Clark Williams, J.M. Kerrigan, Charlotte Granville, Ethel Griffies, Zeffie Tilbury, Jeanne Bartlett, Reginald Barlow, Egon Brecher, Herbert Evans
A strange animal attack turns a botanist into a bloodthirsty monster.
The werewolf is neither man nor wolf, but a Satanic creature with the worst qualities of both. Dr. Wilfred Glendon (Henry Hull) is in Tibet searching for the rare mariphasa plant that apparently only blooms under moonlight. Upon finding the plant his joy is obvious but it's quickly short lived as he is attacked by a half-man half-wolf type creature. He manages to fight off the creature but it d...