All These Beautiful Strangers by Elizabeth Klehfoth
All These Beautiful Strangers begins with a chilling premise: Grace Fairchild, the beautiful wife of a real estate mogul, vanishes without a trace from their lake house, leaving behind her young daughter, Charlie, to pick up the pieces. Ten years later, Charlie is desperate to escape her family's dark legacy and joining her school's elite secret society. The hazing process involves participating in a "diabolical high-stakes scavenger hunt" that threatens to destroy the life she's worked so hard to piece back together since her mother's disappearance, putting everything she holds dear at risk.
Out July 10.