Synopsis

Grisly strangulations in London alert Nayland Smith of Scotland Yard to the possibility of the fiendish Fu Manchu may not be dead after all, 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.

Grisly strangulations in London alert Nayland Smith of Scotland Yard to the possibility of the fiendish Fu Manchu may not be dead after all, 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.