The Marvelous by Claire Kann
Everyone thinks they know Jewel Van Hanen - heiress turned actress turned social media darling who created the massively popular video-sharing app, Golden Rule. After mysteriously disappearing for a year, Jewel made her dramatic return with an announcement: Three lucky Golden Rule users have been chosen to compete in a mystery treasure hunt at her private estate-all for an unimaginable cash prize. Luna: fifteen, fearless, and Jewel's biggest fan. Nicole: the new Queen of Golden Rule given an invitation she couldn't refuse. Stella: the brilliant outsider with a killer ulterior motive. As the weekend goes on, the line between reality and the game begins to blur and the players begin to realize that money isn't the only thing at stake. They should've believed everything they read on the internet.