I am not a fan of thriller and horrors , so when my friend suggested this movie i was not that enthusiastic to watch this one but i am saying now that it was worth it. The content is the hero here.Right from the start it it gives you a pace to watch it and it only increases as the time pass by. The background score does the magic here.The last 10 minutes is just another level.The editing, the music, the shots taken are so gripping that it gives you a chill. Vishnu (Arun) gives you the right pitch of mixed feeling of helplessness and desperation to find the killer.Amala has a small role but has done justice to her character. Its a great watch and especially for thriller lovers. Kudos the changing face of indian cinema.