"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"--

"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...

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.

Ten-year-old Zeus, irritated that he keeps getting struck by lightning, discovers a magical thunderbolt embedded in a stone and embarks on the adventure of a lifetime when he is attacked by the Titans, who have been kidnapping other Olympian children with powers comparable to Zeus's.

"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 --

All year the half-bloods have been preparing for battle against the Titans, knowing the odds of a victory are grim. Kronos's army is stronger than ever, and with every god and half-blood he recruits, the evil Titan's power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods...

"Thirteen-year-old Sikander Aziz has to team up with the hero Gilgamesh in order to stop Nergal, the ancient god of plagues, from wiping out the population of Manhattan in this adventure based on Mesopotamian mythology"--

Edward and Nathan, two Navajo stepbrothers, work with a young water monster named Dew to confront their past and save the world from a monstrous, enormous Enemy that is stealing water from all of the Navajo Nation.

Sixteen-year-old Genie's focus on getting into a top-tier college is destroyed when an enigmatic transfer student, Quentin, helps her transform into a demon-fighter.

"Nathan, a young Navajo boy from Phoenix, Arizona, goes on an epic hero's journey"--Kirkusreviews.com. "When Nathan goes to visit his grandma, Nali, at her mobile summer home on the Navajo reservation, he knows he's in for a pretty uneventful summer, with no electricity or cell service. Still, he loves spending time with Nali and with his uncle Jet, though it's clear when Jet arrives that he brings his problems with him. One night, while lost in...