Common storyline and also tons of loopholes. Unnecessarily dragged episodes. Story was unnecessarily dragged. Entire suspense turned out to be a common storyline repeated in many other movies of a troubled person who turns into a terrorist who vows for revenge and another character who becomes the hero while going through his own personal crisis. Add a mixture of Osho type baba who brainwashes people into believing that world is a crappy place. Add another mixture of a gangster and corrupt politicians/cops who are all involved in a grand masterplan.
Among the many loopholes in the storyline, one big one was how in the world this terrorist was able to easily get hold of Nuclear (fission) bomb that was capable of 5 times bigger blast than Hiroshima/Nagasaki bomb?
When authorities found out the exact location of the bomb, (which itself is another mysterious flaw in the storyline), they decided to drive to the location (in Mumbai traffic) rather than use air transportation?! You talking about bomb that could wipe out most of Maharashtra here! This is lazy writing.
Writer has basically picked stories from different places and combined it into one story. There seems to be no originality in the storyline at all. I have not read the book so I cant comment on that front nor compare.
Nawazuddin is a brilliant actor and for that very reason I have given this series a 3 star rather than a 1. His acting, delivery of humor etc. made this series somewhat watchable till the end. It seems there will be Season 3!