It started with an interesting twist on the concept of demons and possession:
What if demons are actual creatures? Only they're mental parasites that feed off the energy of their hosts. They pass to new hosts through touch and, having no body of their own to die of old age, are immortal as long as they jump to a new host before their old one dies, or are without a body for too long. To keep their host from ejecting them, they create an idealized inner fantasy to trap their victims in their own minds, distracting them from the fact that they've been invaded by a parasite. Based on this premise, any act that brings awareness to the possessed empowers them to dispel their demons. So, traditional exorcisms work, but therapeutic, scientific treatments are also effective.
Unfortunately, the execution of this concept is fumbling.
Stereotypical in a not-fun, but predictable and riddled with plot-holes way, the film tries to be action-y, but is too dull, and tries to be a horror, but isn't scary at all.
While not a truly horrible movie, most of the acting is over-done and the pacing thick with "hurry up and wait".
Enter Dr. Ember, our hero.
He's the surly, unwashed, Constantine-wannabe who uses science and a bad attitude to "evict" demons by entering their host's minds Inception-style and attempting to wake them up. Demon's know Dr. Ember by name and are out to get him personally.
For some reason.
I call Dr. Ember a Constantine-wannabe since his character is a pale copy of the iconic supernatural anti-hero, with all of the disgruntled grumble, but none of the charm or flash. The audience is left wondering why on earth demons think he's worth the time to bother.
The actor was going for gritty, but ended up seeming homeless.
The film's promises of scientific means for exorcism cop out when, though eased by the elaborate tech setup, Dr. Ember mainly relies on inborn supernatural talent to visit other's minds.
Once there, viewers will be disappointed in the mediocrity of the dreamscapes he visits.
In short, there are far, far better action, horror, and action- horror films to waste you time on, but if there is absolutely nothing else on, or you're intrigued by the unfulfilled concept, watching this won't be too painful.