Leaving the safety of the demigod training ground, a disgraced Apollo embarks on a quest across North America to find a dangerous ancient-world Oracle while navigating the challenges of the evil Triumvirate.

When demonic cheerleaders invade his high school, Percy Jackson hurries to Camp Half Blood, from whence he and his demigod friends set out on a quest through the Labyrinth, while the war between the Olympians and the evil Titan lord Kronos draws near.

Publisher Annotation: Will the Greek god Apollo, cast down to earth in the pathetic moral form of a teenager named Lester Papadopoulos, finally regain his place on Mount Olympus? Lester's demigod friends at Camp Jupiter just helped him survive attacks from bloodthirsty ghouls, an evil Roman king and his army of the undead, and the lethal emperors Caligula and Commodus. Now the former god and his demigod master Meg must follow a prophecy uncovered...

"Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process"-- Provided by publisher.

"Who cut off Medusa's head? Who was raised by a she-bear? Who tamed Pegasus? It takes a demigod to know, and Percy Jackson can fill you in on the all the daring deeds of Perseus, Atalanta, Bellerophon, and the rest of the major Greek heroes. Told in the funny, irreverent style readers have come to expect from Percy -- Provided by publisher.

Jason, Piper, and Leo, three students from a school for "bad kids," find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.

A near-death experience, a horrible incident at school, and a move from Connecticut to Florida have turned seventeen-year-old Pierce's life upside-down, but when she needs him most John Hayden is always there, helping but reminding her of her visit to the Underworld.

In this modern version of the Greek myth, Persephone asks Hades for a ride to escape her overprotective mother, sneaks into the Underworld, and refuses to leave.

In this updated version of Greek mythology, Hades, King of the Underworld, tells how a gawky teen Cupid fell in love with the mortal Psyche and what really happened when he kidnapped her.

Seeking a special shield called an aegis, the Olympians trek through a forest that holds many unpleasant surprises, including a flock of vicious birds.