Working with salvagers in a fog-covered world that has forced civilization to move to the highest mountain peaks, thirteen-year-old Chess hides a deadly secret about his ability to survive while his crew leader forges an evil plan.
After a concussion that affects her balance, memory, and other abilities, twelve-year-old Kat goes to I-Can, the "Miracle Clinic in the Swamp," where she joins forces with other patients to expose a plot that endangers them all.
Leo and Remi have gotten used to the strangeness of the Whippet Hotel, but when the top floor is transported to the field of wacky inventions, they find that they must compete against a number of foes to solve a puzzle or lose their hotel forever.
Teenage misfit Alfred Kropp, the last descendant of Sir Lancelot, is drawn back into the OIPEP to battle a group of demons bent on freeing themselves from the confines of an ancient relic.
When an army of fairy space probes programmed to destroy Atlantis return to Earth, Artemis Fowl attempts to stop the destruction of the city while dealing with his delusional and obsessive-compulsive disorders.
Wally, who was adopted from a Russian orphanage and raised in a wealthy New York City family, finds herself living on the streets at fifteen, and, at sixteen, she sets out to locate her birth mother before her Russian gangster father can.
