Fair warning, and never has this phrasing seemed more apt, SPOILERS BELOW.

Like any human uncontrolled descent, this movie was quite passable until it reached the end.

I mean, it was predictable as hell. This is one of those movies where there is going to be a Final Girl. Literally everything in the movie was telegraphed? Was Sarah’s dead husband having an affair with the hotter Juno? Of course he was. According to Movie karma rules, will there be a reckoning for this? Of course there will! When someone says that this cave doesn’t look like the one they studied, does that have ominous meaning..?

Dur.

But really, all that was almost forgivable, if not excusable, because this film is essentially, an all-girl production of ALIEN in a cave. That’s about enough to sell the movie on its own. But the ending…

Q: Which one?

A: Dude, what the hell? You’re the voice from the LAST MRFTL.

Q: Yeah, I got bored. Which ending?

EITHER ending! Okay, so in the American ending you get on Amazon Prime, Sarah escapes the cave, having wounded the evil Juno because she a) was the last person to sleep with Sarah’s husband, and probably caused the car wreck that killed him and Sarah’s daughter at the beginning of the film because he was thinking about it, and b) Juno accidentally killed another of their friends and then left her to die and lied about it. Oh, and c) Juno was the one who took them to the undiscovered and therefore — even without the C.H.U.D. infestation — HIGHLY DANGEROUS cave without telling anyone.

So, just to be clear, if ANYONE in this film deserves to die, it’s Juno. Although I think it sucks that what really appears to get Juno killed is her MOST excusable act: she puts a pickaxe through another girl’s throat when the girl suddenly appears behind her right after they’ve fought off a whole bunch of C.H.U.D.s. Literally ANYONE could have made that mistake, especially someone who has never fought for her life before. They might even panic and run away and leave their victim dying. Not laudable, but understandable for someone who’s suddenly thrust into a situation where choosing wrong means death.

Then WHY, for the love of crap, after Sarah escapes the cave and flees for her life is she confronted, two seconds before roll credits, with the vision of Juno’s vengeful spirit sitting in the car with her? Juno was, in fact, killed for vengeance. People who get justly killed for revenge don’t get to come back and haunt their killers. Otherwise the concept of vengeance just gets silly.

BUT, as the disembodied voice reminds us, there was another ending. The UK ending, as this film was a UK film. And in THAT ending, we discover that Sarah, after her escape…

…finds out she hallucinated the whole escape, and she’s still back in the cave, and the C.H.U.D.s are closing in.

Oh, gods. The first lesson you learn in storytelling school, usually with eyerolls from your bored elementary-school peers, is that any story ending with “And then I woke up and it was all a dream” is tedious and anticlimactic as shit. IT DOESN’T MAKE IT BETTER WHEN YOU MAKE THE WAKING UP PART BAD. Seriously, I just wish I could make a rule: you are not allowed to have your characters hallucinate shit in the middle of your horror movie.* Because it’s like bringing dead people back to life: once you’ve done it, how do you know anything is real? Maybe she was hallucinating killing ANY of the creatures. Maybe she was the first one killed! Maybe she died when she thwacked her head on the cave wall and all of this were coma hallucinations before she succumbed to a fatal head injury! I mean, either way she’s dead and nothing she thought she did mattered, right?

This trope needs to die in a fire.

*Unless the horror is that they are actually insane or otherwise being influenced to hallucinate. That’s legitimately something to fear.