The liars society / Alyson Gerber.

"Weatherby is a fish out of water. When she lands a scholarship to the prestigious Boston School, she's excited to be in the same world as her dad, whom she's never met, and make real friends. But Weatherby has a secret she'll risk everything to protect, one that could destroy her new life. Every member of Jack's wealthy and privileged family has made their mark at the Boston School. Everyone, that is, except for Jack, who is entirely mediocre. He's desperate to prove his worth to his influential father. But Jack has a secret of his own . . . one with the power to ruin everything. When the money for their school trip to a private island, exclusive to Boston students, is stolen, Jack and Weatherby are invited to play a high-stakes game and solve the mystery of the missing money. If they win, they'll be selected to join the oldest, most powerful secret society in the world and they'll be Boston royalty forever. If they lose . . . well, they better not lose. Beloved author Alyson Gerber crafts an unforgettable mystery that asks are some secrets and lies impossible to overcome?"--

Grades 7-9 Scholastic Press