Satanic rituals & child sacrifices Amenabar on orgasm on this one: A variant of the "everyone's in it except you" conspiracy genre, that has been done to death. The difference with this is that Amenabar resolves it much more rationally than most of the older films in this genre and that's satisfying and unexpected. So, +1 for that. But if such is the case, what's the purpose of the effects and visual delusions of the main investigator? Well, I suppose just an added bell to scare a bit the viewer. It almost works, even if carried off a bit far. Amenabar seemingly absolves this case as mass hysteria, but as always there are always two sides to every question: It is NOT very clear that ALL similar cases reported/recorded are just delusions or mass hysteria, so at this point looks like he hasn't researched his homework on the issue, even though the film admits that the FBI has been involved in some such cases. Leads one to think that the issue is essentially benign and related to psychology, but that's not quite the case. There ARE such obscure groups of people in existence (Satanists & Devil worshippers), even though the official carriers of these organizations have officially denied any involvement in questionable acts, as such (Search YouTube for documentaries on Satanism Child abuse victims, etc). Of course, if you are stupid enough - as an adult to involve yourself in such organizations, you'll just have it coming, so overall, the movie misses that point: -1 for that. A wider more well-rounded perspective story, including dubious or questionable (perhaps even unsolved) cases would've been more satisfying and would prompt the viewer to think the issue a bit more, instead of relying on some abstract dream visuals which don't do the issue justice. Overall, quite good, with excellent 1990's cinematography (+1) and good acting by Ethan Hawke and emotionally burdened, dramatic Emma Watson. Watch it if only as the apotheosis of all films Satanic conspiracy all in it horror genre - with an fresh twist.