This time Fu Manchu and his army of henchmen are kidnaping the daughters of prominent scientists and taking them to his remote island headquarters. Instead of asking for ransom, Fu demands that the fathers help him to build a death ray, which he intends to use to take over the world. But Fu's archenemy, Nayland Smith of Scotland Yard, is determined not to let that happen.
Christopher Lee
as Fu Manchu
Douglas Wilmer
as Nayland Smith
Heinz Drache
as Franz Baumer
Marie Versini
as Marie Lentz
Howard Marion-Crawford
as Dr. Petrie
Tsai Chin
as Lin Tang
Rupert Davies
as Jules Merlin
Kenneth Fortescue
as Sergeant Spicer
Joseph Fürst
as Otto Lentz
Roger Hanin
as Inspector Pierre Grimaldi
Harald Leipnitz
as Nikki Sheldon
Carole Gray
as Michel Merlin
