Pre-production In August 2009, director
Vikram Kumar announced that he was set to direct a film titled
24 The film was backed by producer Mohan Natarajan, which would feature actor
Vikram in a lead role.
Harris Jayaraj was confirmed to score the music and
P. C. Sreeram to handle the film cinematography. In a December 2009 interview with trade analyst Sreedhar Pillai, director Vikram stated: "We have signed
Ileana D'Cruz to do
24. It will be her re-launch in
Tamil cinema. She has given us bulk dates from February 2010 for the second schedule of the film." In February 2010, Vikram Kumar officially announced that he had dropped the film. He clarified that he fine-tuned the film script but it was rejected by actor Vikram and the film producer. Further, the other reason cited was that the director had failed to provide the complete script even while production expenses were increasing. Due to difference of opinions, the director voluntarily walked out and stated that he had been making changes in the script and would approach a leading actor in future. Kumar held preliminary discussions with
Mahesh Babu, who loved the script but was unsure about being able to play triple roles, eventually passing the offer on.
Development In August 2014,
Suriya's production company
2D Entertainment announced the project through their official Twitter handle. In October 2014,
A. R. Rahman was announced as the film soundtrack and score composer. Actor
Suriya was confirmed as the male lead. In an interview with
IndiaGlitz, Suriya pointed the core of the plot stating: "The one thing that humans cannot control is "time" but what if one has the power to do so. This is the core theme of the film
24."
Characters Actor Suriya played three distinct roles, one of them being the antagonist. Five to six looks were designed for him. The producers had potential discussions with
Catherine Tresa for the lead female role before
Samantha Ruth Prabhu was finalised in February 2015. In July 2015,
Nithya Menen was roped in to play the other leading character.
Filming Principal photography commenced in
Mumbai on 8 April 2015. A romantic song was filmed in
Nashik by early June 2015. Certain scenes were filmed at
Filmistaan studios in
Goregaon. The first schedule was completed by early September 2015. By mid of the same month, a twenty-day schedule began in
Poland. The lights were provided by Kraków Company Cinelight. The Kraków Film Commission and Kraków Film Cluster supported the project in Poland. By the end of the same month, the last schedule of filming was done at Adithyaram Studios in
Chennai. On 2 November 2015, the filming was completed. In all, the film was shot for over 100 days, out of which 30 days of work was done abroad. More than 60 percent of the film involves VFX. ==Music==