The casting is fair,Sushant Singh Rajput has done a decent job and so have the other characters. Calcutta of the 1940's has been portrayed beautifully and aesthetically. Apart from this one just feel for most part of the movie it is too dark and at times does make it difficult to figure out what's going on. The main issue with the plot is the director has tried to do too many things and in doing so have lost the originality of the writings. One is not too accustomed with Bomkesh might find the movie interesting but not someone who knows all about Bomkesh. The ending is rather stereotype and doesn't charm the viewer. All in all a so-so flick.