I am giving 1 star for the rare witty scenes in the movie which was the only redeeming feature.
The storyline is a poorly constructed hotchpotch of murder scenes from better movie (s) like Nayagan, Dhalapathy, 16 Vayadhinile etc etc., with gory killings.
While Soori had a few scenes to exhibit his talent, potential of Sashikumar and Samudrakanni and other good actors were totally underutilised.
And the final nail was the totally unbelievable conclusion!
So literally and figuratively one is forced to ask " why this kolaveri da?"