It's undoubtedly one of best phychological thriller out there. At the beginning of movie I thought it was just a normal movie in which a person having dissociative identity disorder imagining himself in the call. But when the film progress the plot become more and more engaging with some unexpected twist and turns with a great ending.

It is a must watch of anyone who loves to watch phychological thrillers the plot, songs, acting, dialogues, casting everything is perfect. And as compared to movies bollywood is making now a days it is an absolute masterpiece.