Mira needs to get home for the holidays - badly. But when an incoming blizzard results in a canceled layover, it looks like she might get stuck at the Philadelphia airport indefinitely. And then Harper, Mira's glamorous seatmate from her initial flight, comes to the rescue. Harper and her three friends are renting a car, and they can drop Mira off on the way home. But as their trip begins, Mira discovers her fellow travelers aren't friends like she thought - they're total strangers. And every one of them seems to be hiding something dangerous.

Tonight, Riverview Theaters is closing forever, the last remaining business in a defunct shopping mall. The moviegoers have left, and Jo and her six coworkers have the final shift, a shift that quickly takes a dark turn. First a stranger arrives with a chilling accusation. Then the power goes out and their manager disappears, along with the keys to the lobby doors and the theater safe, where the crew's phones are locked each shift. The crew's tension turns to terror when Jo discovers the dead body of one of her co-workers.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early 20th century tycoon, who wanted to make a wonderful place full of riddles, twisting pathways, and gardens. "A place," he said, "where learning is a game." Shortly after the school opened, his wife and daughter were kidnapped. The only real clue was a mocking riddle listing methods of murder, signed with the frightening pseudonym "Truly, Devious".

What do the queen bee, star athlete, valedictorian, stoner, loner, and music geek all have in common? They were all invited to a scholarship dinner, only to discover it’s a trap. Someone has locked them into a room with a bomb, a syringe filled with poison, and a note saying they have an hour to pick someone to kill...or else everyone dies.

It’s just a stupid meme that’s going around their small fishing town in the dead of winter—people reposting and sharing their biggest fear. But when her classmates start turning up dead—dying in the way that they said scared them the most—Izzy knows it’s no joke. With each death hitting closer to home, Izzy sets out to try to stop the killer. Could her older sister’s friend Tristan have something to do with the deaths? He’s given her some strange vibes. Or what about his brooding cousin, Axel?