The villainous Dr. Fu Manchu races against a team of Englishmen to find the tomb of Ghengis Khan, because he wants to use the relics to cause an uprising in the East to wipe out the white race.

Boris Karloff
as Dr. Fu Manchu

Lewis Stone
as Nyland Smith

Karen Morley
as Sheila Barton

Charles Starrett
as Terence Granville

Myrna Loy
as Fah Lo See

Jean Hersholt
as Von Berg

Lawrence Grant
as Sir Lionel Barton

David Torrence
as McLeod

C. Montague Shaw
as Curator Dr. Fairgyle - British Museum Official (uncredited)

Steve Clemente
as Knife Thrower (uncredited)