Based on James Headly Chase novel One Bright Summer Morning.
Sunil Dutt played a negative role after Mother India and Geeta Mera Naam which released in same year.
An unauthorised adaptation of Willam Wyler's 1955 "The Desperate Hours", starring Humphrey Bogart.
Scene when Ashok Roy comes to the hotel to take the stolen money from Kamini, there is good instrumental tune to which a cabaret dancer swings to. Its from Chantays-Pipeline but the customized tune in this movie is also very good and fits in the story adding to the suspense.
Padmini Kapila was signed for the film but had to reject the offer as she was signed for Ishq Ishq Ishq (a film which she was eventually dropped from). Parveen Babi was then signed for her role in 36 Ghante .