Actor Romesh Sharma turned producer with this film which was based on Dial M For Murder. This film was 2nd film of director Mukul Anand after Kanoon Kya Karega.
The background theme music was again used in the movie " Wahem".
Dimple Kapadia voice is dubbed by a dubbing artiste in the film.
After Aitbaar, director Mukul Anand had launched a film with Rajesh Khanna and Sridevi and the title of the film was C.I.D. with R.D.Burman as the music composer . This film was then shelved later.
After Aitbaar, actor Romesh Sharma produced Diljalaa with Jackie Shroff and Farah, with Bapu as director mostly the whole film was shot in Mauritius. After Diljalaa, Romesh Sharna and Mukul Anand came toghether again to make Hum with Amitabh Bachchan.