Question: nibunan who is the killer?
Answer: The policeman tasked with nabbing the killer is DGP Ranjith (Arjun), who is so consumed by his job that he sometimes spots crimes even when there are none, like in an innocuous painting by his wife (Sruthi Hariharan). He's almost Holmesian in how he observes the minutiae. When Vandhana wears new earrings, he notices.