What works in the book is the constant state of tension that prevails between the characters as they run across Mumbai to explore various aspects of the investigation. Not for a moment you feel that there is a dull moment. Another thing that makes the book such a good thriller is the fact that he has used the city like a character and there are aspects of the city that blend into the storytelling effortlessly, be it the missal pav and the vada pav to the chawls of the city or the high-profile club.