Grisly strangulations in London alert Nayland Smith of Scotland Yard to the possibility that fiendish Fu Manchu may not after all be dead, even though Smith witnessed his execution. A killer spray made from Tibetan berries seems to be involved and clues keep leading back to the Thames.

Cast:Christopher Lee, Nigel Green, Joachim Fuchsberger, Karin Dor, James Robertson Justice, Howard Marion-Crawford,

Genre:Crime, Thriller,

country:Germany, United Kingdom,

Production:Constantin Film, Hallam Productions,