Back at the Winterhouse hotel for another holiday season, Elizabeth and Freddy, who love puzzles, dig deeper into the mystery surrounding a hotel guest who left behind odd artifacts, including a magical book that evil Gracella Winters once attempted to use to gain destructive power over the entire Falls lineage.

It's springtime at Winterhouse and Elizabeth is settling into the joyful chaos of her new home. But it isn't long before she and Freddy are drawn into an ominous new mystery. Guests at the hotel start behaving oddly, and Elizabeth's powers manifest in thrilling-sometimes frightening-new ways. As unnatural tremors shake the foundations of Winterhouse, Elizabeth hears cries for help from Gracella Winters, a villain she'd thought dead and gone for good....