Patrick Carman

Ten-year-old Leo's future and the fate of the extraordinary Whippet Hotel, where his father is the maintenance man, are at stake when a series of cryptic boxes leads Leo to hidden floors, strange puzzles, and unexpected alliances.

Although forbidden to see each other, Ryan and Sarah continue their investigation of the mysterious happenings at the dredge by communicating through video clips, text messages, midnight meetings, and journaling. The reader may view videos on a website by using links and passwords found in the text.