It’s just a field, right? That’s the entire premise to “In the Tall Grass,” a horror movie based on a Stephen King novella in which a group of people get lost in a massive, dense, grassy prairie and find themselves unable to escape.

King wrote the novella originally published in two parts in Esquire magazine in 2012 along with his son, Joe Hill. It’s the story of two inseparable siblings who hear the cries of a young boy lost within a tall field of grass. But when they venture in to rescue him, they find themselves ensnared by a sinister force that quickly disorients and separates them.

In the trailer for “In the Tall Grass,” we see the grass slicing into their ankles and the mud trapping them where they stand. And that little boy isn’t all he seems either.

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