Con man Dudley Jerico sets out to rob corrupt millionaire Victor Rosso of his legendary Gemini diamond, but there's another operator in town who is out to con the con.
Patrick Macnee
as Dudley Jerico
Connie Stevens
as Susan Gray / Claudine / Georgina
Herbert Lom
as Victor Russo
Marty Allen
as Wally
Leonardo Pieroni
as Angelo
Peter Yapp
as Felipe
Bruce Boa
as Nolan
Joanne Dainton
as Merle
Paul Darrow
as Receptionist
Jasmina Hilton
as Maid
June Cooper
as First Stewardess (uncredited)
Nancy Egerton
as Second Stewardess (uncredited)
