I once saw a documentary about animals. It was about orangutans. They would kill their own kind, just for the sake of killing. I was thinking, do things that hurt their own kind happen to advanced animals?
There are also unreasonable points in the movie. An Fbi agent, who is specially responsible for network investigation, was hacked so easily and implanted a Trojan horse. It seems unprofessional.
On the phone, the detective had told Marsh to stop moving there. She even saw the car get ready and got into the car. As a police officer, her professional sensitivity is not enough.
Owen's method is a bit close to Jig Saw, it seems that Jig Saw has a successor.
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