Ben Guterson

Elizabeth, eleven, spends Christmas break at Winterhouse hotel under strange circumstances, where she discovers that she has magic, and her love of puzzles helps her solve a mystery.

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.

Zander Olinga’s grandmother is the owner of the fabled Number Nine Plaza, the spectacular nineteen-story skyscraper. The Nine, as it’s called, has everything imaginable, including a massive Ferris wheel on its rooftop, monorail tracks suspended from its ceiling, and twenty-five glass elevators. But there’s something evil looming in the shadows, and strange accidents start befalling the guests. When Zander and his friend Natasha come across a...