Wealthy Peter Sterling and his younger wife Christine have an existence of little excitement so when a stranger comes into their lives, she is intrigued. An affair turns into much more and they are soon plotting to rob Peter of a precious gemstone.
Louis Jourdan
as Peter Sterling
Angela Punch McGregor
as Christine Sterling
Peter Cummins
as Detective Mills
Bruce Spence
as Doug Mitchell
Kerry Walker
as Sibyl Anderson
Diane Craig
as Miss Stevens
Warwick Comber
as Young Man
June Jago
as Mrs. Coolidge
Joan Letch
as Mum
Danee Lindsay
as Junior Secretary
Sean Myers
as Freddie
Robin Cuming
as James
