The killer in the movie "Heaven" is Peter Kurishinkal.
DYSP Bijoy Kuruvilla, the investigating officer, identifies CI Peter Kurishinkal as the murderer and subsequently arrests him. Peter Kurishinkal is described as a widowed police officer who relies on his intellect. He lives with his mother, Mariyam, and his son, Sebin. His position as a CI allowed him access and opportunity, leading to his eventual exposure as the perpetrator.
