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.
James Robertson Justice
Sir Charles

Howard Marion-Crawford
Dr. Petrie

Tsai Chin
Lin Tang

Walter Rilla
Prof. Hans Muller-Mertens