Just a few random observations
First of all, overall I liked this movie. It was intriguing, kept my attention, and had humorous moments. But there were lots of things that were just goofy. E.g.
(1) The hypnosis thing is unrealistic. It would have made more sense to drug him, or to implant something in his brain that would disable him. The original hypnosis scene was bizarre, and then to hypnotize him by clinking a cup is silly.
(2) A bright flash brings people out of the trance. This seems like a major flaw with the plan (in addition to be. Everybody will eventually see a bright light (camera, lightening bolt, exploding light bulb), and then the jig is up; the body-snatched person will run for the hills.
(3) What's eventually going to happen when the town is full of young black folk? Won't that look odd?
(4) It's convenient that that little door opens by itself at just the right moment (when the girlfriend leaves the room), and that the revealing pictures are right there for him to see. Probably not a good idea for the serial-kidnapper chick to keep photos of 20 victims in the bedroom.
(5) This would seem like a very inefficient way for her to get dudes for transplantation. They had dated for months I think she said. Plus there would be a trail for all these missing persons going right to her. Her bro had a method that seemed to work.
(6) What's up with that old TV from the 1970s? They have modern technology to transplant brains, but they can't get an HD TV in there?
(7) The videos and feed they play to him on that old TV are bizarre. It's a hoaky way to explain some things. It's sort of like in the old Batman shows, right before they would kill Batman, they would explain how they were going to do it. I know that they tried to explain this (stating that the procedure was more effective if the subject understood what was happening), yeah -- right.
(8) Did the cops ever arrive? (Sorry - ran out of room here...)