Don't Let In the Cold by Keely Parrack

Don't Let In the Cold by Keely Parrack was published on September 6, 2022 by Sourcebooks Fire.

Publisher's summary:

A claustrophobic, high-stakes thriller that will have you fearing what waits out in the cold.

It was supposed to be just one night in the cabin: one night for Lottie and her brand new stepsister, Jade, to try to get along. When a solar flare causes a massive blackout—no power or cell signal—Lottie knows they've got a long night ahead of them.

Then, in the dark, someone else shows up at the cabin—a stranger named Alex, claiming to be lost and needing shelter from the coming snowstorm.  But later that night, Lottie spies him in the driveway talking to two mysterious men in a pickup truck, and she's sure he's lying about why he's here.

Before Lottie can find out more, a fire forces her, Jade, and Alex out into the blizzard, where they must rely on one another to get to safety—wherever that is.  In the remote, freezing Tahoe wilderness, they have to survive more than just the elements.  Soon it becomes clear that Alex's accomplices are hunting for all three of them, in a scheme that's gone too far and taken a chilling, deadly turn.

Lottie, Jade, and Alex end up on the run in a blizzard near Lake Tahoe.  Two men are out to get them for some reason, and they must survive the cold while staying away from their enemies.  

The book is harrowing and suspenseful, but it's also a story of personal growth.  Lottie and Jade intensely dislike each other since they don't want to be stepsisters.  Lottie also despises Alex, since she has good reason not to trust him.  These three young people are forced into the wilderness in a blizzard and must work together.  The best part of the story is seeing how the three teens gradually come together through adversity and learn to respect and even care about each other.  It's beautiful.

This is an excellent book.