There's mystery and adventure on every floor. There's no other place quite like the Whippet Hotel. Each and every floor has its own wacky design--and its own wacky secrets. The guests are either mad or mysterious. And ducks are everywhere. Leo Fillmore should know everything there is to know about the Whippet Hotel--he is the janitor's son, after all. But a whole lot more mystery gets thrown his way when four cryptic boxes are left for him ... boxes that lead him to hidden floors, strange puzzles, and an unexpected friend or two. Join Leo as he takes the ride of his life, without ever having to step outside. As the hotel starts to falling apart and the mystery thickens, there's only one thing Leo can know for sure: The future of the Whippet Hotel depends on him.