Kait (Kaitlyn Boyé) is trying to self-rehabilitate from her drug habit with her sister Olivia (Laneikka Denne) filming the entire journey. Yet the house they have picked to undergo this process in keeps warping and changing, threatening to trap them forever.

Directed and written by Jack Dignan, this Australian found footage film places the sisters into constantly unfamiliar territory where a demon more powerful than addiction has been awakened and where every twist and turn traps them deeper in this never-ending nightmare world.

I’m not always the biggest fan of found footage, but this has an unsettling mood that holds up for most of the movie, as well as a bleak ending that really got to me. If it worked that well for me, lovers of this genre are going to absolutely love this.

Puzzle Box is playing at the Popcorn Frights Film Festival. You can get a virtual pass to watch the festival from August 10 to 20. To learn more, visit the official site. To keep track of what movies I’ve watched from this Popcorn Frights, check out this Letterboxd list.