The plot was a bit different from the original story, the original story contains a blue horse which was modified to black in film. Being a byomkesh reader it was like I was not watching a Byomkesh film rather it was like a hollywood adapted action film. Apart from this for rare readers of Byomkesh series its a spine chilling, fully thrilling and entertaing movie. The cast was fantastic with best recreation of 40s kolkata which was best supported by the music by Pt.Bickram Ghosh. In one note a Grt visual Approach by both director and Cinematogrpaher. And hence I m going with 3/5