This is a Malayalam language film starring Mohanlal, Renjini and Naseer in pivotal roles.
The film has a good premise - a police officer investigating a serial killer who is an excellent sniper, with a twist on who it actually turns out to be. But the film is created crudely by involving the police officer's wife into an incredulous blackmail scheme. Add to that the dark theme running in the film overall makes it a dull watch - why did the director / cinematographer think that people watching in theatres would enjoy watching a dull, dark screen throughout. Top that with the fact that the film is very slow moving. I wouldn't be surprised if some fell asleep in the theatres. The motivation of the killer is equally unconvincing. Just as the overall film itself.
A plain waste of a talented main cast...