i have to give this movie a 4 because of a couple of thing . 1. what i will call the stupid victim syndrome . if you have the killer on the floor and you have his gun shoot him please . if you be a cop and you have your shotgun point at the killer back shoot him please . 2. when you be in a high stress situation and you have your finger on the trigger of a gun your first instinct be to squeeze . this be one of the first thing they teach you in handgun training and the reason that you do not put your finger on the trigger until you be ready to fire ask any hunter or infantryman . if you be electrocute and your muscle should also contract make you squeeze your finger . 3. it really hard to lay on the floor completely still for 8 hour without 2 other people one of them a doctor not notice that you aren not dead . even more so if you be supposedly die of a brain tumor and be in the hospital just a few month earlier . 4. technically and the killer do kill one of his victim the guy he inject with poison that have to get the antidote . if you poison someone and that be murder . 5. what be adam lesson that he be suppose to learn . yes and the doctor need to be there and but what be adam crime . maybe i just miss something . other than those thing and i would have give this movie a high grade . the plot be pretty good and and the way the killer choose to kill his victim be very inventive . i can even forgive the terrible acting on the doctor part the scene with his family be enough to make me sick . the cinematography and soundtrack be very good and but the end seem contrived and just do not work for me . thank goodness i do not have to pay to see this or i would have demand a refund .