The reason for my rating being so high is because I understood the movie in its entirety. Toby Jugg (a.k.a Robert Pattinson), was suffering from PTSD and becoming a paraplegic due to being shot. When the movie begins, he puts on a brave face, as well as his once removed Aunt Julia to show one another that everything will be fine. At first, he is sane and well, except for the handicap and the PTSD (dreams) but begins to feel that something sinister is happening at the home. At one point in time, his nurse gives him a pill called amytal "hours of oblivion, guaranteed". You can safely assume that he begins to lose it once this medicine is administered to him and that he is continually being given it. The mis-trust that the Doctor gives him by not sending his letters off, the medicine, the lights going out at 7pm, and the fact that the Doctor is really creepy and hides in corners, makes for someone to become paranoid. The ending was as beautiful as it was sad. He opens the door to find the Doctor on the floor, and his Aunt on the bed, holding hands, sleeping. He quickly blows out the candle and army crawls (because he is handicapped) to the other room where he awaits the two. Once the Doctor walks out of the room, his Aunt see's him in the shadows and he goes to her. She does rock him but refuses him as he attempts to kiss her. Obviously this sets him off because throughout the movie, she is sending him mixed signals and he is only following his heart. So, in him 'raping her' (quotes used because he wasn't really raping her) he is showing her that he's there, he's right there in front of her and she will not have him. In fact, she keeps pushing him away as if he is the plague which only infuriates him more. He thrusts and thrusts himself upon her and she begs him to stop and because they both know, he cannot satisfy her sexually, they cannot be together (in her mind). Also, she seems to have sided with the Doctor and as far as he's concerned, she has back-stabbed him and taken the Doctors word and also, chose him sexually over him so if he can't have her, no one can (so there are two factors for her death). As you can see with the ending, the Doctor stands over the two and undoubtedly he was there the whole time Toby was on top of her. He is curious about the inner workings of a person and he wanted to watch.
Also, the book that this was based on, shows that Toby stands to inherit a lot of money, but this is never mentioned in the movie. I hope this helps anyone who is confused.
By the way ... TEAM JACOB! lol