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.

The long-awaited prophecy surrounding Percy Jackson's sixteenth birthday unfolds as he leads an army of young demigods to stop Kronos in his advance on New York City, while the Olympians struggle to contain the rampaging monster, Typhon.

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.

"Enter a school of magic unlike any you have ever encountered: There are no teachers, no holidays, and no friendships save strategic ones. Survival is more important than any letter grade, for the school won't allow its students to leave until they graduate . . . or die. The rules are deceptively simple: Don't walk the halls alone. And beware of the monsters who lurk everywhere. El is uniquely prepared for the school's dangers. She may be without...

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 Percy's instructions to find the mortal side of the Doors of Death. If they can fight their way through the Gaea's 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...

"The Darkling rules Ravka from his shadow throne. Alina forges new alliances as she and Mal search for Morozova's last amplifier. But as she begins to unravel the Darkling's secrets, she reveals a past that alters her understanding of the bond they share and the power she wields"

How do you handle an encounter with Medusa on the New Jersey interstate? What's the best way to take down a minotaur? Become an expert on everything in Percy's world with this must-have guide to the Percy Jackson and the Olympians series. Complete with interviews, puzzles, games, and original short stories by Rick Riordan.

"They say that a ghost witch lives in the woods, up on Brewster's Hill. They say her companion, Bloody Bones, has a pig skull for a face and stands taller than a man, his skeleton gleaming white in the moonlight. They say that the witch takes young girls, and no one ever sees them again. Daniel doesn't believe the stories about the witch or her beast. He figures the kids on the bus are just trying to scare him, since he's new. But when his sister,...

"Simon Snow is the worst Chosen One who's ever been chosen. That's what his roommate, Baz, says. And Baz might be evil and a vampire and a complete git, but he's probably right. Half the time, Simon can't even make his wand work, and the other half, he starts something on fire. His mentor's avoiding him, his girlfriend broke up with him, and there's a magic-eating monster running around, wearing Simon's face. Baz would be having a field day with all...

During the first winter after the Monster Apocalypse, Jack and his buddies prepare for a monstrous Christmas celebration, but a supervillainess steals Jack's prized monster-slaying weapon, his Louisville Slicer, and he vows to get it back.