The car Samantha Eggar drives at the end of the film is a Maserati Sebring.
Filmed after, but released before, "The Servant" (1963).
Dirk Bogarde and Mylene Demongoet starred together in "The Singer Not the Song" (1961).
Opening credits: "The characters and events in this film are fictitious. Any similarity to actual events or persons living or dead is purely coincidental."