After getting expelled from yet another school for yet another clash with mythological monsters only he can see, twelve-year-old Percy Jackson is taken to Camp Half-Blood, where he finally learns the truth about his unique abilities: He is a demigod, half human, half immortal. Even more stunning: His father is the Greek god Poseidon, ruler of the sea, making Percy one of the most powerful demigods alive. There's little time to process this news. All too soon, a cryptic prophecy from the Oracle sends Percy on his first quest, a mission to the Underworld to prevent a war among the gods of Olympus. This first installment of Rick Riordan's best-selling series is a non-stop thrill-ride and a classic of mythic proportions.

After a summer spent trying to prevent a catastrophic war among the Greek gods, Percy Jackson is finding his seventh-grade school year unnervingly quiet. His biggest problem is dealing with his new friend, Tyson, a six-foot-three, mentally challenged homeless kid who follows Percy everywhere, making it hard for Percy to have any normal friends. But things don't stay quiet for long.  Percy soon discovers there is trouble at Camp Half-Blood: the magical borders that protect Half-Blood Hill have been poisoned by a mysterious enemy, and the only safe haven for demigods is on the verge of being overrun by mythological monsters. To save the camp, Percy needs the help of his best friend, Grover, who has been taken prisoner on an island somewhere in the Sea of Monsters; the dangerous waters Greek heroes have sailed for millennia. Only today, the Sea of Monsters goes by a new name: The Bermuda Triangle.  Together with his friends, Percy must retrieve the Golden Fleece from the Island of the Cyclopes or Camp Half-Blood will be destroyed. But first, Percy will learn a stunning new secret about his family, one that makes him question whether being claimed as Poseidon's son is an honor or simply a cruel joke

When the goddess Artemis goes missing, she is believed to have been kidnapped. And now it's up to Percy and his friends to find out what happened. Who is powerful enough to kidnap a goddess? They must find Artemis before the winter solstice, when her influence on the Olympian Council could swing an important vote on the war with the titans. Not only that, but first Percy will have to solve the mystery of a rare monster that Artemis was hunting when she disappeared -- a monster rumored to be so powerful it could destroy Olympus forever

Percy Jackson's fourth summer at Camp Half-Blood is much like his previous three—high-octane clashes with dark forces, laced with hip humor and drama. Opening with a line for the ages—The last thing I wanted to do on my summer break was blow up another school—this penultimate series installment finds Percy, Annabeth and the satyr Grover furiously working to prevent former camp counselor Luke from resurrecting the Titan lord Kronos, whose goal is to overthrow the gods. When the heroes learn that Luke can breach Camp Half-Blood's security through an exit from Daedalus's Labyrinth, they enter the maze in search of the inventor and a way to stop the invasion. Along the way they encounter a lifetime supply of nightmare-inducing, richly imagined monsters. Grover's own quest to find the lost god Pan, meanwhile, provides a subtle environmental message. Percy, nearly 15, has girl trouble, having become something of a chick magnet. One of Riordan's strengths is the wry interplay between the real and the surreal. When the heroes find Hephaestus, for instance, he's repairing a Toyota, wearing overalls with his name embroidered over the chest pocket. The wit, rousing swordplay and breakneck pace will once again keep kids hooked

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 to stop the Lord of Time.  In this momentous final book in the New York Times best-selling series, the long-awaited prophecy surrounding Percy’s sixteenth birthday unfolds. And as the battle for Western civilization rages on the streets of Manhattan, Percy faces a terrifying suspicion that he may be fighting against his own fate.