This is a rare kind of movie where in you get hooked to the movie right from the beginning to the end..Movies like this come once in a blue moon in Indian cinemas..Ratsasan is a gem equally as effective as that of hollywood thrillers in terms of technical work Positives: 1.Ghibran:Man!!! He is the backbone of the movie..his music intensified the thrill..Terrific BGm 2.Story:I don't think find tamil movies with script as strong as this one..You will get deceived multiple times because of the twist 3.Vishnu:He lifts the movie with his shoulders but I feel bad for him as he is too much underrated..Talented personalities like him should be recognized well by audience rather than praising the few people who does the same kind of role repeatedly Negatives: Amala Paul:I don't know the reason why she was in the movie..No role for her Romantic scenes:Could have been removed to make this as a cult thriller Overall this movie was just awesome..Watch it and you will never regret going to it