What a disappointment. This starts off with an interesting enough idea and fairly creepy execution. A kid saves a wealthy businessman from a mugging, and is rewarded with a job: watch a door in a remote abandoned building from 8pm to 8am to make sure it never opens, for $100k/year. Just watch the door. "What happens if it opens?" "It won't open, because you're going to watch it."

Needless to see, things aren't quite as uneventful as that... put almost. After a decent enough setup to make me want to see what was going to happen, the kid's friends, out partying, show up to bother him, and of course one drunkenly opens the door when the others aren't looking, so they go in to find her... and then, 2/3 of the movie is just "scared teens wandering around darkened corridors". There's lots of people saying, "Did you hear that? I heard something", and, virtually nothing else. They hallucinate a few things, and the muggers who were run off turn up trapped in the bowels of the building, having been caught by their victim and, they figure out, put there to feed... something, some unspeakable evil kept behind the door. But what that something is, is never explained, and it just becomes long, admittedly creepy scenes of wandering through the dark, occasionally punctuated as one by one everybody gets themselves killed in a fairly perfunctory, offhanded manner.

Make no mistake... this is creepy, certainly atmospheric, the entire time they're behind the door. It's as unendingly creepy as wandering around an abandoned subterranean maze of corridors by flashlight really is (ask me how I know.) But that's it. There's no plot, just teens wandering around in the dark being unsure what they're seeing and hearing. Even a barely-there movie like "Inside" redeemed itself with occasional glimpses of something unspeakable as a payoff. This even occasionally shows you for a second that other people are down there with them, but never explores it, other than the mugger turning back up late in the movie to present a more physical threat.

It is, I will say, a perfect date movie in the sense I define them: creepy enough to cause someone to want to clutch your arm, little enough happening to be worried about missing something interesting if you and that someone get... distracted.

And, I will say... honestly, I liked it for that. It really is continuously creepier for longer than many movies pull off. But there's no story, nothing is really explained, and there's not much of a payoff at the end except, well, don't do your job of guarding a door keeping evil in, expect a bad result. But it even minimizes that pretty handily, the obliquely hinted-at phantasmagoric horror never does actually show in a way that redeems the buildup.

I'd have said this has that "je nais se quois" just for the extended creepiness alone being good enough for me to kind of like, except... eh... I feel like I should save that for movies I can actually recommend in some way. And this just doesn't rise to that level. The interesting setup never gets a payoff, it's just an excuse to get a group of teens wandering around in the dark, and then that's the whole movie.

Disappointing.