The film is based on a 2008 murder case in Noida, in which 14-year-old Aarushi Talwar was found murdered at her home. The family’s missing 45-year-old servant Hemraj was initially sought for the murder, until his dead body was discovered in another part of the building on the following day. The police then suspected Aarushi’s parents, Rajesh and Nupur, for the murders. They theorized that Rajesh had murdered the two after finding them in an “objectionable” position, or because Rajesh’s alleged extra-marital affair had led to his blackmail by Hemraj and a confrontation with Aarushi. The case was then handed over to a Central Bureau of Investigation (CBI) team led by Arun Kumar, who exonerated the parents, and identified another group of suspects, based on narco tests.