Fu Manchu's 168th birthday celebration is dampened when a hapless flunky spills Fu's age-regressing elixir vitae. Fu sends his lackeys to round up ingredients for a new batch of elixir, starting with the Star of Leningrad diamond, nabbed from a Soviet exhibition in Washington. The FBI sends agents Capone and Williams to England to confer with Nayland Smith, an expert on Fu.
Peter Sellers
as Fu Manchu / Nayland Smith
Helen Mirren
as Alice Rage
David Tomlinson
as Sir Roger Avery
Sid Caesar
as Joe Capone
Simon Williams
as Robert Townsend
Steve Franken
as Peter Williams
Stratford Johns
as Ismail
John Le Mesurier
as Perkins
John Sharp
as Sir Thuud
Clément Harari
as Dr. Wretch
Kwan-Young Lee
as Tang
Burt Kwouk
as Fu Manchu's Servant