Ratsasan is the new pyscho thriller written and directed by Mundasupatti frame director Ram Kumar. Once again he teamed up with Vishnu Vishal and other supporting actors like Kaali Venkat and Muniskanth from Mundasupatti for an all new spine chilling psycho thriller. It is a complete shift for Director Ram Kumar as the script and screenplay for Mundasupatti is simple, and straight for a laugh out comedy drama whereas, Ratchasan is quite complex in terms of script, content and visual treatment. Pysho-Thriller genre is not very successful in Tamil cinema and very few directors explored this rare genre but Director Ram Kumar put his heart and soul in this film to bring out the best form from his cast and crew. The best thing about this movie is unpredictability. The script and screeplay plays well with the audience mind and make them guessing all the time till the last frame of the climax. Lots of unpredictable twists and turns are framed through out the film to give an all new experience of watching a dark fearful pschoctic thriller. Vishnu Vishal mentally and physically well transformed for his role. Dialogue delivery and body language is perfect for the lead protogonist and Vishnu Vishal gave his full potential to justify the fearless cop character on screen. Director ensured that there is no major logical flaws while investigating the mystery case and at the same time lots of inferences are quoted in different layers of the film to convince the audience. Amala Paul plays the female lead but there is very little scope for her to share the screen space with Vishnu Vishal. Muniskanth and Kaali played their part well to support the investigation process with Vishnu Vishal. All the supporting roles are well connected with the screenplay except Suzanne character. The main cast ' The Pscho Killer' Character was well written and executed on screen. The entire story was scripted around the vilian character and it worked out really well to give the spook shocks for the audience throughout the film. The real hero of this film is Ghibran. He comes up with terrific background score that keeps you horrified and glued to the seat. Once the villian character was revealed to the audience the BGM score was at different worldclass level to give the edge of the seat experience. There are couple of slow romantic tracks which are nice to hear but it is not required for this racey thriller. It does look force fit in the screenplay. Kudos to director for not showing heart broken gory scenes but he frightened the audience with his awesome script. Editing looks neat but the length of the second half is little dragging. Also, flashback scenes look redundant in the second half and not very convincing. Approximately, 15-20 mins of run-time could have been chopped to maintain the gripping experience at high.On the flipside, the make up for the villian character is not upto the mark. It gives an artifitial amateur look for a gruesome serial killer. Suzanne character does look irrelevant for the script but that's the ground reality in the police department. Overall, Ratchasan is a top notch Pscho-Thriller backed up by deadly back ground score from Ghibran. I'm sure it will give you the edge of the seat experience and test your fear factor. Rating Out of 9.8/10