6 SOULS has a compelling and unique storyline that nicely intermixes spiritual and psychological elements: There are some very original ideas here. It's well-produced and cinematized with realistic acting by all. It has the necessary focus but still leaves room for individual interpretation, the sort of film that you can watch multiple times, picking up new details and subtleties with each view. At times it seems pro-Christian, at times anti-Christian, or at least critical of the superstitious-fundamentalist brand of Christianity. Again, the religious elements are clear enough yet also vague enough.
The plot does drag and meander a good bit. There are also some of the usual tired old demon-tropes (people throwing up black goop, etc). Still,this film has a fairly solid mythos behind it and relies more on surprise and suspense than it does raw schlock. While nothing truly special, 6 SOULS is probably worth seeing if you like psychological/supernatural horror and have been disappointed by most other recent films in this genre.
The ending leaves room for an interesting sequel. . .7 SOULS?