On the outskirts of a small town, a teenage girl named Elizabeth returns home one day to find that her house has been broken into and her younger brother, Little Bob, has been abducted.

She chases the kidnappers into the woods with a rifle, but fails to catch up with them when she steps on broken glass and hurts her foot.

They live with their Aunt Marsha after their father, an abusive traumatized war veteran, died, and their mother’s health deteriorated significantly.

Crawford spies an old treehouse high up in a tree and convinces Killian to climb up with him, where they discover a shaken Elizabeth.

The creatures taunt them by hanging the bodies of Crawford’s friends from trees, and hoarsely calling Killian’s name to him as he investigates their surroundings.

The men are implied to be the psychotic sons of the dead woman in the bedroom, and have been posing as monsters this entire time.

Killian and Elizabeth grieve over their siblings’ deaths and kiss, then discover a pair of assault rifles in the trunk of the police truck.

[6] Gary Goldstein of the Los Angeles Times called it "a lackluster backwoods thriller" lacks the tension of Jeopardy!.

[8] Ryan Pollard of Starburst rated it 8/10 stars and wrote, "In the end, while there are inadequate faults with the script and some ungainly performances, Treehouse overcomes its flaws with its core aesthetic, visceral atmosphere, Dana Melanie's towering performance, and ultimately delivering on its promise to scare the pants off you.

[10] Patrick Cooper of Bloody Disgusting rated it 3.5/5 stars and called it "a brooding, atmospheric thriller that works on a lot of levels".

[11] Scott Hallam of Dread Central rated it 3.5/5 stars and wrote, "If you're looking for a tense and creepy night at the movies, give Treehouse a look.