The security guard kid that I can't remember his name at the moment has an easy job to watch a door. About 90% of this movie could of been avoided if he did his job. The Jess character is the type of person that will aggravate you since they think they're right and you must listen to them at all times. This character annoyed me the most due to the I'm a bad ass know it all attitude. Through out the whole movie I was like dam this movie could of been done in 2020 and I can see SJWs do the same dumb things. In short, everyone in this movie deserves what they got. The security guard mantra in this whole movie should of been ignorance is bliss and never let friends come to his job.

The biggest spoiler about this movie is that it has no spoilers (in the movie itself). A group of friends enter a forbidden door experience some.....what? just some noises and background movements and then a hostage and a dead body. Eventually, the hostage goes nuts and kills a few of them and the one who finally gets out is killed on the outside. Why? And how? They could never have logically entered as we are told, one of the outside doors has to be closed for the second to open. So neither their friend nor the trailing group could have entered and if their friend did, the door would be unlocked throughout and the (whatever) was being contained would have easily gotten out. Good concept, well shot. Just incomplete, it had no end.

Fairly clean cut horror arising from a surreal situation.

The makers don't explain the source of evil, so it remains a mystery. Which is OK, except the evil doesn't have a clear method either. Instead we end up with crazy slash and stab.

Also there's the unavoidable "I'll just wander off on my own" tendency. It's nicely wrapped up though and not a waste of time.

Big problem is the dialogue - 1001 questions: Did you hear that? Did you see that? What do you mean? Where are we? Are you for real? What's going on? In the middle there are a few unconvincing exchanges where information is repeated within seconds. Very hard for actors to deal with that.