Four years. Four girls. A million secrets, scandals, and schoolyard shocks. Each series follows the same group of four best friends—Skylar, Tiana, Brielle, and Jade—from freshman year to senior year. Every book ends with their signature after-school routine: sitting on the bleachers or hanging out in one of their rooms, dishing out the craziest, funniest, or most emotional thing that happened that day—aka, their Hallway Confession.