I stumbled across the trailer of this movie and was curious to check it out. What a treat. This is a smart, human, original piece of indie cinema that works really well as a drama as well as a thriller. The main character who cannot feel pain is riddled with so much mental anguish that his face exudes it in a way that evokes so much empathy. The movie defies genre expectations and manages to deliver a very compelling human character-drama along with what feels like a carefully researched sci-fi-thriller (in the true sense of "science" rather than fantasy). One is reminded of Aronofsky's Pi in the best of ways - but this film has so much more to offer. I highly recommend it.
