After learning that the father he never knew is Poseidon, God of the Sea, Percy Jackson is transferred from boarding school to Camp Half-Blood, a summer camp for demigods, and becomes involved in a quest to prevent a catastrophic war between the gods.

When the goddess Artemis disappears while hunting a rare, ancient monster, a group of her followers joins Percy and his friends in an attempt to find and rescue her before the winter solstice, when her influence is needed to sway the Olympian Council regarding the war with the Titans.

To stop the invation of Kronos's army, Percy and his demigod friends must set out on a quest through the Labyrinth.

A horrific family tragedy sends sixteen-year-old Jacob journeying to a remote island off the coast of Wales, where he discovers the crumbling ruins of an old orphanage that was home to children who were more than just peculiar, but possibly dangerous--and who may still be alive. Illustrated with vintage found photographs.

Presents three original short stories, interviews, character profiles, and puzzles about demigod Percy Jackson and his world.

Welcome, boys and girls, readers of all ages, to the first-ever Library Olympiad! Kyle and his teammates are back, and the world-famous game maker, Luigi Lemoncello, is at it again! This time Mr. Lemoncello has invited teams from all across America to compete in the first ever LIBRARY OLYMPICS. Will it be fun? Like the commercials say ... HELLO? It's a Lemoncello! But something suspicious is going on ... books are missing from Mr. Lemoncello's library....

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.

Leo and Remi have gotten used to the strangeness of the Whippet Hotel, but when the entire top floor is hoisted into the sky and 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 beloved hotel forever.

What dangers do runaway demigods Luke and Thalia face on their way to Camp Half-Blood? Are Percy and Annabeth up to the task of rescuing stolen goods from a fire-breathing giant who doesn't take kindly to intruders? How exactly are Leo, Piper, and Jason supposed to find a runaway table, dodge a band of party-loving Maenads (who just might be a little psychotic), and stave off a massive explosion...all in one hour or less? With his trademark wit and...