Good cinematography. Acting was decent if not a little over acted.
What really stopped this movie from being good was the writing. This movie wasn't even close to great, in fact it was bad.
Do not believe the 9/10s and 10/10s, they are quite obviously friends and family and other interested parties.
To make it a good movie they just had to not make it so obvious from the start what was going on. When you have this psychologist with patients, saying nothing and looking like a deer caught in the headlights the entire time... Yeah.
Maybe I'm being unfair to the writers, and there were more lines but they were cut out in editing? Maybe the actor improved not saying them and the director went for it?
Huge mistake though.