Suddenly) is a 1973 Indian Hindi-language film, directed by Gulzar, written by Khwaja Ahmad Abbas, and starring Vinod Khanna.

[2] It is inspired by the real-life sensational 1958 murder case K. M. Nanavati v State of Maharashtra.

After months of untiring efforts of doctors, nurses and all paramedical staff, the condemned person finally meets his fate at the gallows.

1963 movie Yeh Rastey Hain Pyar Ke was also based on the same case.

Ranjit is happy in his married life, until he finds out about his wife's affair with his best friend.

[6] Achanak was based on a Khwaja Ahmed Abbas story, The Thirteenth Victim, which had appeared in the magazine called Imprint.