Carman, Patrick

After exploring the many mysteries of the Whippet Hotel, Leo discovers that the building is still hiding many more secrets and sets out to find them all, encountering adventures mishaps along the way.

After Atherton's three-tiered world collapses, ending the geographical division of the social classes, Edgar, Samuel, and Isabel try to restore the flow of water and uncover the world's mysterious origins in the process.

When thirteen-year-old Alexa embarks on a mysterious quest, she finds her old friends Yipes the little man, Murphy the squirrel, Odessa the wolf, and Squire the hawk have been designated to help her.

Fifteen-year-old Will Besting, plagued by crippling phobias, is sent by his doctor to Fort Eden where he and six other teens are treated by spending time in fear chambers where they confront their worst nightmares, and although they all emerge feeling emboldened, in time unexplained aches and pains make them wonder what is really happening to them.

Twelve-year-old Alexa and her companions unwittingly lead Abaddon, now in the form of an enormous, horrible sea monster, to the secret community known as the Five Stone Pillars when they go to bring the people living there home.

Captain Roland Warvold tells Alexa and Yipes about the adventures he shared with his brother Thomas in Elyon, before the wall went up and divided the world in two.

The Trackers, a team of tech-savvy kids, with a cache of wireless surveillance gear and mad coding skills, set out to find Shantorian, the world's most dangerous hacker. Includes a link to a Web site with related videos and clues.

Edgar, an eleven-year-old orphan, finds a book that reveals significant secrets about Atherton, the strictly divided world on which he lives, even as geological changes threaten to shift the power structure that allows an elite few to live off the labor of others.

Leo, the son of the maintenance man of the Whippet Hotel, opens a series of cryptic boxes which reveals hidden floors, strange puzzles, and unexpected alliances and lead him on an adventure to save the building and his future.

Siblings Amy and Dan Cahill continue their global search for the clues that will unlock the Cahill family's secret power while also working to evade Irina Spasky.