I just have mixed thoughts over this movie. The first half of the movie is definitely the weakest part. It's mostly pretty boring and predictable with each of the friends getting told to go to a room, and then something bad happened. Also, the movie doesn't even bother to give any of the characters' development or even feel for them when we first meet them. The movie contains cheap jump scares that are ineffective and really obvious. Now, the second part is where things get a little bit better. It's pretty disturbing what these people are doing to their patients and the aftermath of the surgery. I feel bad for these people over the stuff that happened to them. The movie is suspenseful with one of the characters fighting back against the villains and is pretty brutal on how they do it. Also, the revealed on why are they doing it isn't anything to big or interesting.