Mavis Evelyn Madison, Jr., is beyond excited to begin her first year at Thomas-Scott Academy, a co-ed boarding school rich with family tradition. Her mother and older twins sisters once walked these same halls, and now it's her turn.But Mavis has a secret passion - sleuthing. Inspired by her Uncle Adrian, a private investigator, she can't resist chasing mysteries, even against her mother's wishes. She and Willow break the rules and pick the lock of the forbidden antique and pawn shop on campus, when they stumble upon a mysterious diary that only Mavis can see the entries and a pocket watch. On the first day of chemistry class, the class is stunned as their teacher, Dr. York is a hologram. Why is hiding behind a projection? And why does he wear a replica of the very pocket watch that Mavis found at the antique and pawn shop.With eight loyal friends by her side, they must stay undetected while unraveling the mystery of Dr. York and the pocket watch.