Eighteen-year-old Spencer Sandoval wishes she knew. As rumors swirl that her ex, Ethan, was the driver that fateful night, she can't bring herself to defend him. And their messy breakup has nothing to do with it - she can't remember anything from that night, not even what put her in that car with Ethan, Chris, and Tabby Hill, the new loner in school. Was it just a night out that went very wrong? And is it just a coincidence they were all part of Argyle's esteemed honor roll, the Headmaster's List? In a place ruled by pedigree and privilege, the answers can only come at a deadly price.