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.

Another common feature of both Kanoon and Ittefaq was that in both these song-less films Salil Chowdhary was the music director.

Dilip Roy (Rajesh Khanna) is a painter and is married to a rich woman, Sushma.

Rekha is a married woman staying in a rich neighborhood, but her husband isn’t home at that time.

After some searching, they find Jagmohan's body outside and suspect that Dilip has killed him before entering the house.

Dilip tries to reason with them and suspects inspector Diwan (Sujit Kumar) is helping Rekha.

He proves the same with the help of his cigarette lighter unconsciously taken by the inspector in one of his previous visit's to Rekha's house.

At the same time, Inspector Karwe (Iftekhar) finds, with the help of piece of Renu's bracelet at the crime scene in colour palette and fingerprinting, that Renu was the real killer of Dilip's wife and he clears Dilip Roy of murder charge.