Perhaps the movie's greatest mistake is that it tries too much. The movie is gripping, but not 'taut' for precisely the same reason. The technical stuff is excellent. The set designs and costumes are worthy of a period piece and the attention to detail is brilliant. Sarika, Kamal's 'research-assistant' has surely done her homework.
Raja captures the mood of the film without resorting to heroics.
Excellent, restrained effort from Raja.