The liar's guide to the night sky
(Book)

After her grandpa got sick half a world away, Hallie Jacob's parents yanked her to Colorado the last semester of her senior year. Career-wise, she has specialized in fighting fire, and now she is surrounded by ice, snow, and a thousand cousins she's half-banned from hanging around with. On one big family weekend in the freaking tundra, Hallie sneaks off with those cousins to an abandoned ski slope. Caught in a random mudslide, what started as a Secret Bonfire Party goes in a Potential Donner Party direction real fast. With some cousins in need of medical attention, Hallie is surprised when Jonah Ramirez-- her cousin's extremely off-limits, absurdly hot best friend) joins her to search for a way to send help back to their stranded friends and family. -- adapted from back cover