Kainaz

Bangkok-based wealthy businessman, Amritlal Chopra (Rajesh Khanna), marries a much younger woman, Beena (Laila Khan), but is unable to get intimate as he suffers from Asthma. She starts to look for intimacy elsewhere and finds it with her chauffeur, Raj (Shahib Chopra). Not satisfied, she then arranges Amritlal's accidental death, notifies Police, identifies the body, and continues her affair with Raj. (imdb)