Sharmila Tagore claims that she was first choice for the heroine role, but that she had turned it down because she was pregnant. Although the film's director Shakti Samanta confirmed her claim, Asha Parekh denied that she was ever second-choice for the role that won her the Filmfare Best Actress Award.
In the opening scene, the baraat has the song "mere sapno ki rani" playing, which was a song from Rajesh khanna's previous superhit Aradhana (1969) from the same filmmaker Shakti Samanta.
One of several titles based on the American crime novel "I Married a Dead Man" (1948) by Cornell Woolrich under the pseudonym William Irish.
Black Thought, Dice Raw & Peedi Crack song Get Busy from the album Okayplayer Bollywood Remake - Deleted Scenes, sampled the song "Jis Gali Mein Tere Ghar Na".
Kati Patang's 'yeh
shaam mastani' sampled the old number 'green leaves of summer' by The Brothers Four.