What's the difference between script and screenplay? An expert may tell you that a script is the set of primary dialogues which describe the story while screenplay is the added layer with directorial inputs.

I wouldn't recommend such definitions and would rather advise you to watch this Tamil Classic "Ratsasan" (2018). Pardon me for saying this but it's a pretty ordinary story. In fact, years back I had seen a CID episode (Yes of Daya Darwaza Todo fame) with very similar plot elements. But the screenplay, the execution on screen makes the movie exemplary. The story deals with a young man, Arun (Vijay) who aspires to be a film director. He has researched extensively on serial killers and has a script ready for a serial killer movie. Unfortunately, none of the producers give him a green signal. A dejected Arun finally succumbs to all around pressure and on his brother in law's guidance, takes up a job as a Police SI. When a teenage schoolgirl gets abducted, her parents then find a mutilated doll's head in a gift box attached to their dog's collar. Arun finds a similarity with another girl who was murdered few days ago, and both of them being 15-year-old school students who were kidnapped while returning home from school. Just like the victim, the hair on the doll's forehead is uprooted, the eyes are drilled, and her mouth is damaged. Apart from that, in particular, there is a knife mark on the corpse's forehead, ears and nasion. The same marks were found in the doll's face .

Arun becomes convinced that these were the deeds of a deranged mind but his Superiors completely disregard his theories. Nevertheless the hunt begins for the psycho killer and we find a two and half hours of edge of a seat stuff.

The direction is splendid to say the least. Ram Kumar weaves a tale of brutal murders, conceited clues, a 'never say die attitude' possessing protagonist, red-herrings and a wonderful backdrop as a reason for everything that transpired. Editing and camera work deserves a special mention. There's one particular scene where the cops try to rescue a girl from the clutches of the devil. The scene begins with Arun & his team speeding down the highway whereas the girl tries to fend off the antagonist in a secluded mansion. This part is so beautifully shot that without even depicting an iota of violence or gory scenes, suspense is amped up in the minds of the viewers. It's a perfect cinematic experience.

As far as the negatives are concerned, I have to say that the villain was shown all too powerful. Consider Ammu's abduction scene where She was captured right in front of her house during her birthday party. Will any serial killer take such a risk ? Further which daring soul would attempt to stash the body in the Dickie of her Father's car who happens to be a cop?

But overall, Ratsasan is an engaging thriller for the most part with a taut storyline and compelling performances which keep us hooked till the end.

Kudos Kollywood.