During the recording of the film music, a man carelessly said that if the film didn't prove to be a hit it would be because of the music. When the film was released, however, the music was extremely popular, and music director Khemchand Prakash received letters from all over India. Even though he was ill at the time, Prakash went to that man's house and made him read all those letters.
This was Kamal Amrohi's directorial debut.
This was Bombay Talkies' greatest hit movie. Unfortunately, it couldn't save the company, which closed down in 1954.
This was the first Hindi ghost film to have a song which works as a leitmotif through out the film. This became a trend and was followed in other suspense/ghost films such as Madhumati, Woh Kaun Thi and Mera Saaya.