Vishal Bhardwaj suggested the topic to the director Meghna Gulzar to make a movie as she was almost an expert on this case already due to her extensive knowledge.
In October 2017, Rajesh and Nupur Talwar, parents of Aarushi Talwar on which the film is based, got acquitted by the Allahabad High Court.
In the movie, Irrfan Khan and Tabu go through a failing marriage and in one scene Irrfan Khan mentions the name of movie Ijaazat which has similar story as that of Irrfan and Tabu in this movie.The movie Ijaazat(1987) was directed by Gulzar, father of Meghna Gulzar which is clearly a tribute to him.
Aarushi's aunt Vandana Talwar, who launched a campaign to prove the parents' innocence, provided some material to the film's writer Vishal Bhardwaj. Bhardwaj is also said to have received first-hand accounts from Rajesh and Nupur Talwar.
Second movie to be released in the same year based on the double homicide true story of Aarushi Talwar and Hemraj Banjade. The first one was Rahasya starring Kay Kay Menon in January 2015. Talvar was released in October 2015