The only reason Ajay Devgan agreed to do the film was because his home production Shivaay got delayed. This gave him 3 free months.Seeing that he was not busy, the producers approached Ajay and promised him the film would be completed in 12 weeks.

The movie is inspired by the original Malayalam version of the movie, written and directed by Jeethu Joseph. As a possible tribute to him, when Ajay Devgan's character makes an entry in a hotel register, he signs his name as Jitu Joseph.

This Bollywood movie is a remake of the original Mohanlal-starred Malayalam movie of the same name which holds the box office record for the second highest grossing Malayalam movie ever.

Shriya Saran (Nandini), who is the mother of Anju (Ishita Dutta), is only 8 years older than Ishita in real life.

Some of Drishyam's plot is similar to the Japanese novel 'The Devotion of Suspect X' by Keigo Higashino. Ekta Kapoor, who acquired the rights of this novel in India, sent a legal notice to the makers of the Malayalam movie.

Commentator Nandini Ramnath noted how the denial of even slight inspiration by the Japanese novel is parallel to the inside movie storyline as "Jeethu Joseph's achievement lies in lifting an intelligent concept and localising it so effectively that the links (to the Japanese novel) appear tenuous unless closely investigated. "Drishyam' is the perfect crime about a perfect crime, and its director's alibi is almost as airtight as the one Ishigami creates for Yasuko and Misato."

The shoot for the film commenced in March till May and in May it was decided the film will release in July

Debut of Prathamesh Parab.

On the announcement of the Hindi remake, film producer Ekta Kapoor sent a legal notice to the Malayalam filmmakers. Ekta Kapoor acquired the movie rights of Japanese author Keigo Higashino's book, The Devotion of Suspect X, and her legal team claimed that Drishyam is a film adaptation of the novel, for which they purchased rights.

Was released on 2,365 screens in India.

In October 2014, it was announced that Saif Ali Khan would take the lead role and reprise the role played by Mohanlal in the 2013 Malayalam predecessor.

Film was announced in 2014 with Saif Ali Khan in lead.

Later it was announced that Tabu will be playing the role of Meera Deshmukh, a cop and Shriya Saran will play the wife of Ajay Devgn's character.

In November 2014, it was announced that Ajay Devgn would star in the Hindi remake of the 2013 film 'Drishyam", which will be produced by Viacom 18 Motion Pictures in association with Panorama Studios and directed by Nishikant Kamat.

The First 20 Day Shooting schedule of the film began on 13 March 2015 in Goa and ended on 1 April 2015.

The first look of the film was unveiled on 29 May 2015.

Ajay Devgn had been in Canada to shoot snow scenes for his upcoming film "Shivaay", but light snow conditions had him reschedule that film and return to India to instead begin "Drishyam".

The music rights of the film are acquired by Zee Music Company.

A song titled "Carbon Copy", which was sung by Ash King, was released on 7 July 2015.

Supporting cast of the film playing cops were mostly Marathi actors Prasanna Ketkar,Yogesh Soman and Kamlesh Sawant.

Was declared Tax Free in Uttar Pradesh .

The film is also based on Nepali folk stories which have been heard since generations. On that story a dumb man kills her lover and his mother replaces the dead body of that girl with a dead goat.

The film got recognized for famous meme saying what happened on 2nd of October, as Vijay went to Satsang (Religious Event) with his family on same date in the movie.

Despite Head of Police Meera Deshmukh (Tabu) going to great lengths for her son Sameer Deshmukh (Rishabh Chadha), they do not have any scenes together during the entire movie. Neither does Sameer Deshmukh have any scenes with his father.

The name of inspector Gaitonde is a reference to Commissioner Gaitonde from the classic movie Agneepath 1990