I have read the other user comments and I am happy someone has compared it to the original by Kamal called Perumarzhakalam released in 2004.
The original had a tight story and no loopholes as described above about the Indian Govt not having proper records, or even bad shoots and bloopers.
The story is great and a touchy one and well described by others. But sadly Nagesh taking credit for it as his own story is a sad thing and amounts to nothing other than plagiarism.
I guess he has been affected by Bollywood's so called "inspired" syndrome.
He must at least give credit where it is due.
I liked some of his older movies, but now I suspect if any of them were originals after all.
Here is a link in IMDb for the original masterpiece. http://www.imdb.com/title/tt0425350/#comment I recommend everyone to see the original, even with subtitles if needed, to know what class direction and class acting is all about.