Worst film. There are lot of fake five star reviews which may prompt you to watch this movie, but believe me it's not worth your time. These ratings might be put by people who might have something to do with this film and their relatives.
This is not a investigation thriller, one hour into the movie and yet we don't understand where the movie is taking us. You get the idea when investigating officers take all the cctv footages of different places and take it to another hospital's cctv observation area for cross checking and finding out about the suspect, like there is no place of their own for that investigation.
And after one hour when we begin to get the idea of movie and hope for some thrills, then suddenly a new character enters and spoonfed us a lot about medical experiments and ultimately about the motive of killer and it last for about 30-35 minutes. It's hard to sit through the 1 hour 45 minutes of this crazy movie. There's not a single character to root for. There is no social message in the movie. Please avoid this mess.