Despite the flat character development that some critics have talked about (and I agree with, with the exception of the female lead), I found this compelling viewing. It has a fantastic opening, which pulled me in, but what I found fascinating was the relentless feeling that it was all taking place in a truly dark place; where normal happy life had been extinguished. The story itself is dark enough, but the effect is to a large part the result of the choices made in the cinematography, with the acting of some of the cast also helping. Finally the location adds too, to the sense of a closed, remote world, full of evil... Real human evil, not some horror type fantasy!