So disappointed, rewriting the ending *spoilers*

The entire movie was a great buildup to an ultimately unsatisfying ending. Excellent story and performances, had me intrigued but it was the last ten minutes that completely ruined it.

*SPOILERS* its not even the fact that they die, but how they die. They both deserved more of a fight than that. I'm so upset I need to rewrite it myself: When the mom tells the son to RUN after accidentally stabbing her, he races up the steps, killer tackles him, he wrestles with killer on the kitchen floor, son knocks him over the head with the flashlight or the phone, or gets a good stab in at least. That's when the Killer pins him down and takes out his contacts. Son is disoriented, but escapes. (Contacts or no contacts, that's the one thing he could do as foreshadowed earlier, run his ass off and outrun the killer.) So he runs into the neighbor with Alzheimers wandering the woods. She leads him to her house nearby, takes him in. Son calls police. As the phone rings, he overhears lady talking to someone. He turns around. He can blindly see the killer's figure. The killer responds to her, he has a voice. Revelation: the killer is actually her husband or....the psychopath who murdered her husband (it can go either way, we don't know how husband dies; would shine further light on her freak out in front of the house earlier in the movie with the son; she's not just crazy, she was actually reliving a memory of the night her husband died. Struggle ensues, son dies. Cut to final scene, vehicle heading in direction of another open house. There, fixed it.