"Clay's adventures at a magical camp continue as he befriends a new ally and faces new adversaries in his journey to find his magical talent and solve new mysteries of Price Island"-- Provided by publisher.

"At the conclusion of The Mark of Athena, Annabeth and Percy tumble into a pit leading straight to the Underworld. The other five demigods have to put aside their grief and follow Percys instructions to find the mortal side of the Doors of Death. If they can fight their way through the Gaeas forces, and Percy and Annabeth can survive the House of Hades, then the Seven will be able to seal the Doors from both sides and prevent the giants from raising...

When Luca's cabinmate wishes to disappear because of bullying, Raven and Luca use their knowledge of wishes--and friendship--to bring him back.

Young alien agent Zack, surly Galactic Patrol Cadet Vraj, and shy human camper Opal team up to find some Duthwi eggs before they hatch and cause a planetwide disaster, while the Gnairt who were smuggling the eggs try to retrieve them.

"At the International TWISTI competition, finalists from around the world have gathered to match wits at a remote lake camp in Canada. One night the lead player, Reza Amari, tells a spooky story about a monster and a man who disappears, leaving behind only a set of shrinking footprints. All the campers love the creepy story. They're still talking about it the next morning--until they find out that Reza has vanished! Now it's up to Lola Evans and Mateo...

"The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land--Greece itself--to find the Doors of Death"--

Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.