The film was originally titled Kaun Hain Khooni. Due to the film not being sold, the producers changed the title for suspense feeling.
Shashi Kapoor & Moushumi Chatterjee did a film Anari in 1975. A song from that film was edited out from the final cut. The song was a part of Anari's released LP record also. Years later the producer of Kaun Hai Khooni added that song to this film to add star value. Thus, Shashi Kapoor & Moushumi Chatterjee making a special appearance in the film.
Mahesh Anand's dancing silhouette that was used in Sanam Tere Kasam,Karishmaa, and Tan Badan was used again in the title sequence of the film.