A horror film starts when on a botanical expedition in Tibet, Dr. Wilfred Glendon is attacked in the dark by a strange animal. Returning to London, he finds himself turning nightly into a werewolf and terrorizing the city, and only the juice of a rare Tibetan flower can save him.

• The Werewolf of London
• Henry Hull
• Warner Oland
• Valerie Hobson
• Stuart Walker