People are saying 2007 horror has the most unexpected plot twist of all time

*Warning, this article contains spoilers for The Mist (2007)*

People are saying that one iconic 2007 horror film has the most unexpected plot twist they've ever seen.

Check out the creepy trailer here:

It's spooky season, which for some signals pumpkin carving and collecting candy, while for others it's an entire month of binging horror films in the hopes of finding the best one ever made.

For some, that film is Stephen King's classic story, The Mist, directed by Frank Darabont.

For those not familiar with the film, it's got one of the most unsettling premises you could imagine: "After a powerful storm damages their Maine home, David Drayton (Thomas Jane) and his young son head into town to gather food and supplies. Soon afterward, a thick fog rolls in and engulfs the town, trapping the Draytons and others in the grocery store. Terror mounts as deadly creatures reveal themselves outside, but that may be nothing compared to the threat within, where a zealot (Marcia Gay Harden) calls for a sacrifice."

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If that doesn't sound scary enough, wait until you hear about the twist.

So, the twist in the 2007 film is actually much darker than that in the original novella.

We won't spoil the novella for you, but it ends on a much lighter note than the film, which sees David and his family finally go to escape the town, only to run out of gas as they pass one of the deadly creatures.

Not sure how to escape, David takes it upon himself to kill his family with a gun, to spare them the awful fate that waits outside.

However, he runs out of bullets when he gets to himself, so he leaves the car and screams, in an attempt to get one of the creatures to kill him.

However, they don't come. Instead, the mist clears, and the U.S army file in, helping other survivors escape.

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Distraught, David collapses on the ground and screams out, having realised he killed his family for nothing.

And the film's ending really stayed with viewers, with some remembering it years later, taking to Twitter to share their thoughts, one person thinks about the movie daily: "I really, REALLY enjoyed The Mist (2007) to the point where I saw it 3 days ago and I’m still thinking about it constantly."

While another said that the film taught them the importance of waiting: "we just watched the mist (2007) and the moral that we have decided upon is that sometimes it's okay to wait a few minutes."

A third added: "and you know what. while I’m at it. The Mist (2007) is a GOOD movie. period end of discussion."