Contrived ending aside, this is a thoughtful, well presented, and intriguing sci-fi film which exceeded my expectations. Guised as the 'supernatural', Coherence sharply offers an allegory of a long strange (psychedelic) trip. The experience is more acutely realized here than in your average science fiction mind-fuck film.
83/100 - Great.
I have an agreement with my doppelganger that we won't to try to kill each other. These things need to be worked out ahead of time so you don't make rash decisions when you aren't thinking clearly. If other people haven't figured out their shit, then you need to find a safe place.
Mind-bending, like Primer. A masterfully complex plot that keeps unfolding onto itself. Seemless and quite coherent indeed. Everything that usually thrillers are not. All the surprises are in the right places, and they are meaningful. A good story, a original premise. All good. And, as it is going, you do get eager to see it happen in front of you. It creates tension and uses it quite wonderfully. Nicelly done.
I found it too confusing to be truly enjoyable. I understand things were headed for total chaos, with the discovery of not just two but multiple parallel realities colliding... However it got confusing right with the introduction of the second house. It could have benefited from a smaller cast, but it sure challenges you the entire time and triggers a healthy discussion in the end. Maybe I'll come back to it someday.