Gaia Gill is the last person in the world anyone would expect to go missing. Beautiful, athletic, and recently accepted to a prestigious college, she has everything to look forward to--but the night of her going-away party at the Moon Mountain ski resort, she disappears. Gaia's younger sister Esme is supposed to be flying back to England with her family after the party, but she can't leave with Gaia missing--especially because nobody remembers Gaia...

Out of sight, out of their minds: It's a school-trip splatter fest and completely not cool when the other kids in her class go all braindead on new girl Bobby.The day of the ski trip, when the bus comes to a stop at a roadside restaurant, everyone gets off and heads in for lunch. Everyone, that is, except Bobby, the new girl, who stays behind with rebel-without-a-clue Smitty. Then hours pass. Snow piles up. Sun goes down. Bobby and Smitty start to...