Watched Ratsasan today and was compelled to review and ask movie buffs to add this masterpiece thriller in their wish-list. This is a rollercoaster ride which doesn't let you comfortably sit in your seat. This is the longest rollercoaster I have ever sat on. Very gripping narrative, with a mind numbing, soul quenching background score. From cinematography to editing to acting, all in all a masterpiece. Movies first half ends at a point, where you are hungry to discover the killer but the second half leaves you at the edge of your seat until you reach home, still in the reminiscences of the killer, one struggles to sleep. Yes, all of this despite being completely unfamiliar with Tamil language.