Remake (Possible Spoilers)
Is this movie a remake? I remember a movie back in the early 80s called Double Exposure about a guy who was a photographer who would sleep with women and then take their pictures, or vice verse. And then, they'd turn up dead within a day or so. One girl had her head shoved into a trash bag with a rattlesnake. As it turns out, the photographer's amputee friend was jealous and killing all of the girls he slept with. Women didn't really see the amputee as a real man, and he was not deemed a real threat until it was too late and he'd killed them.
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We never really grow up, we only learn how to act in public.