Ittefaq is a 1969 Indian mystery thriller film produced by B. R. Chopra and directed by his brother Yash Chopra. The film stars Nanda and Rajesh Khanna in the lead with Sujit Kumar, Bindu, Madan Puri and Iftekhar playing supporting roles and has music by Salil Chowdhury. The film became a "semi-hit" at the box office. The film is based on 1965 American movie Signpost to Murder. which was earlier adapted into a Gujarati drama Dhummas starring Sarita Joshi.

Baldev Raj Chopra was a prolific Indian director and producer noted for pioneering the Bollywood industry and television series. He's known for directing notable films, such as Afsana, Ek Hi Raasta, Naya Daur, Sadhna, Kanoon, Gumrah, Hamraaz, Dhund, Pati Patni Aur Woh, Insaf Ka Tarazu and Nikaah. He also produced hit films, including Dhool Ka Phool, Waqt, Ittefaq, Aadmi Aur Insaan, Chhoti Si Baat, The Burning Train, Aaj Ki Awaaz, Baghban and the TV series, Mahabharat. He was awarded Dadasaheb Phalke Award, India's highest award in cinema, for the year 1998, and Padma Bhushan, India's third highest civilian award, in 2001.