Its a good story, but not a murder mystery whodunit novel. You not only get to know the real culprit by halfway through by his MO but also by his name. The rest of the book is just getting the proof.
With presence of Adv Mahant, who is SMP version of A.B. Carr of Doug Selby series by Erle Stanley Gardner, I thought this was Indianised adapted D.A. novel. But it's not.
However its a good book. Only if you are looking for usual Sunilian whodunits, this is not it.