Honestly speaking, I didn't like it from the very beginning because besides horror, it seems that the characters and story is deliberately portrayed in a manner to present a bad and false image of our great Indian army and Indian Govt. In the series the army head is frequently using words like anti national, Adarsh hindustani which distinctly shows the intention of the makers of this series that they are trying to defame Indian army. But why? Only they can tell. But I can say that the Bollywood is the 'CHAMCHA' of Gangster Dawood except some actors. So they are trying to portray a good image of Muslims. And nothing bad in doing it. But you this is very cheap way. You must not prove anyone good by defaming our great Army.
And those who are giving it 10/10 ,9/10 rating are the andha-bhakts of Bollywood