Debutant filmmaker Gnanasekar has come out with a action thriller in his maiden venture at a time when newcomers opt for safe bets like a commercial masala.

A taut thriller with the backdrop of serial killngs have clicked with the masses. Nan Sivanigiren is one such attempt.  However the cliched sequences and deja feeling of a deja vu ride plays spoilsport on the whole show.

The movie seems to inspired by Kadhal Kondein and Sigappu Rojakkal, speaks about a youth's frustration against a certain section of people after he witnessed a turmoil in his younger days.

Married women gets murdered in Chennai. Prabhu (Karthik) enters Chennai. He settles down in a mansion with his friends. He comes across one Prabha (Varsha) and falls in love with her. Slowly they get close to each other when Varsha gets the shock of her life. She comes to know that Prabhu is behind the killings. As events unfold, Prabha lands in cop's nest and it is revealed in detail why he turns serial -killer.

Karthik and Varsha combine well. The director has done well to extract the best from them. Karthik comes with a serious expression all through reminding one of  Dhanush in Kadhal Kondein. Varsha portrays innocence and oozes with energy.

It is a decent attempt by Gnanasekar. But many a clcihes could have been avoided. It is too much predictable and go on expected path as it progresses. Nan Sivanagiren impresses in parts.