[[caption-width-right:250:Meet Mr. Sleep]]
* Although this falls in line with ParanoiaFuel, given the oppressive atmosphere, the eldritch nature of the city and the machinations of the Strangers, there's still the [[spoiler:true forms]] of the Strangers to contend with. Brr.
* The Strangers. It's not just that they're [[spoiler:corpses animated by the squiddy aliens that live in their skulls]], it's that with just a syringe or two, they can completely erase all your memories, your personality, everything that makes you ''you'' and replace them with synthetically created false memories. And [[ParanoiaFuel you'll never know the difference, or how many times they've done it]].
* It may not be the most disturbing thing, but Dr. Schreber's first memory is of [[spoiler:himself, removing all of his own memories from his own mind. Place yourself in the same position and realize the horror that is voluntarily destroying all of your identity]].
** Not to mention the fact that you can only do this by ''[[spoiler: [[{{Squick}} sticking a huge freaking needle]] [[BodyHorror into the center of your brain]]]]''.
* Mr. Hand in general!
** Particularly after he starts thinking like a human.
** He gets given [[spoiler: Murdoch's memories which were meant to make Murdoch a serial killer. Instead, Mr. Hand is a serial killer. He violently murders an innocent woman off screen.]]
* Mr. '''''Sleep'''''. ''All'' the Strangers are creepy, but this one is a [[CreepyChild little boy]], who's [[SlasherSmile always smiling]], and [[TheVoiceless we never, ever hear him speak]]. And when he [[SuddenlyVoiced finally does say something]]? "[[spoiler: Kill him!]]"
** FridgeHorror sets in when you remember that [[spoiler: all the Strangers are actually alien parasites possessing the bodies of dead humans.]]
* When we see from Inspector Bumstead's perspective when [[spoiler:he's thrown out the city, he - and the audience - realize with a certain nihilistic dread that this is just one small city in the middle of nowhere, in the grand vastness of space. Something about the crushing size almost renders his {{Heroic Sacrifice}} meaningless...]]
* Everything Bumstead's predecessor Walenski says is absolutely true.
* A lower class husband spends dinner complaining about his boss. Then things get changed to him being the boss, and he complains about his employees. What makes it so eerie is just how completely different they are in personality and speech. As if they were always like that before the change. It's very uncanny.
* The very nature of the story itself is utterly nightmarish, coming as it does [[WriteWhatYouKnow from an actual recurring nightmare of Alex Proyas]]. One can see all the familiar qualities of a persecution nightmare in it: our protagonist, who at first can't even remember his own identity, is being chased through an unidentified city by unidentified knife-wielding shadowy men with unknown motives. He's also in trouble with the law for crimes he doesn't know whether he committed or not. The place he needs to go to find the answers to all his questions is perpetually just out of reach; no matter who he asks and what method he tries, he can never quite get there. Meanwhile, he doesn't know who he can trust, since anyone might be working for his persecutors, and he can't even be sure his most recent memories are at all accurate because everything around him keeps changing. ParanoiaFuel indeed!