Rick Riordan

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.

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.

"A can't-live-without guide for guests of the Hotel Valhalla, this volume contains facts about the Norse gods as well as other characters and creatures you might encounter if you are fortunate enough to be chosen as one of Odin's brave warriors." -- Provided by publisher.

To prevent the Mayan gods from battling each other and destroying the world, thirteen-year-old Zane must unravel an ancient prophecy, stop an evil god, and discover how the physical disability that makes him reliant on a cane also connects him to his father and his ancestry.

Months after confronting the legendary La Llorona, Paola starts dreaming again, this time about fantasmas that are stalking her and someone who might be even more dangerous -- her estranged father.

After her home is attacked by shapeshifting vampires, twelve-year-old Serwa Boateng is sent to live with her aunt and cousin in Maryland, but the aspiring vampire hunter discovers that middle school is harder than it appears on television, especially when she has to avoid detention and turn her classmates into warriors before they become vampire food.

"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." -- Publisher.

"Percy Jackson, son of Poseidon, has come face to face with two snake-haired ladies who refuse to die. But they're the least of his problems. Because Percy finds himself at a camp for half-bloods, which doesn't ring any bells for him. There's just one name he remembers from his past: Annabeth. One thing is certain -- Percy's adventuring days aren't over. He faces the most important quest of all: the Prophecy of Seven. If he fails, it's not just their...

After he learns he is the son of Poseidon and is accused of stealing Zeus' lightning bolt, Percy Jackson sets out to recover the bolt, prove his innocence, and prevent a war between the gods that could destroy the Earth.

Based on the publishing phenomenon, Percy Jackson and other young demigods continue to fight, but this time in the sea, to fulfill their destinies. To save their world, Percy and his friends must find the fabled and magical Golden Fleece. Embarking on a treacherous odyssey into the uncharted waters of the Sea of Monsters (known to humans as the Bermuda Triangle), they battle terrifying creatures, an army of zombies, and the ultimate Evil.