I saw several movies of Nawazuddin, his roles in almost all movies are abnormal kind, the role of serial killer Raman Raghav 2.0 best suits to Nawaz. and he performed well too.As we know these kind of movies, if directed by Anurag kashyap will take movie to real world or live.
I saw several english serial killer movies, and this movie too can challenge those movies.The movie is watchable one time, those who like horrors they can watch repeatively.