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 the woman who would become Indra Devi was born in Russia in 1899, yoga was virtually unknown outside of India. By the time of her death, in 2002, it was being practiced everywhere, from Brooklyn to Berlin to Ulaanbaatar.Born into the minor aristocracy (as Eugenia Peterson), Devi grew up in the midst of one of the most turbulent times in human history. Forced to flee the Russian Revolution as a teenager, she joined a famous Berlin cabaret troupe,...

Priding herself on having the most up-to-date information about everyone at Mount Olympus Academy, gossipy Pheme sends VIP messages that linger in cloud letters above her head, a habit that raises the ire of her fellow goddesses.

As the weather grows wilder and the ice caps melt, Arctic bears starve, dragons awake, the earth goddess Gaia becomes restless, and Alexa, the daughter of best-selling author David Rain, uses her special abilities in an attempt to save the world from the forces of evil.

Pandora is famous among her classmates at Mount Olympus Academy for being curious, but when one of the godboys brings a mysterious box to school, her curiosity about what is inside it will create more trouble than she could have imagined.

What would you do if you could change the past? What mistakes would you correct? What injustices would you prevent from ever happening? What do you want more than anything? There's only one thing Sikander Aziz wants: to have his brother, Mo, back. When Sik gets his hands on the mythic tablet of destinies, his wish is granted. Sik is overjoyed... until he learns that it's not only his brother's destiny he changed, but everyone's. The more Sik tries...

Greek and Roman demigods Nico, Jason, Reyna, Leo, and Piper try to stop Gaea, the Earth Mother, who needs the blood of two demigods sacrificed in Athens--the blood of Olympus--to awaken. Meanwhile, the friends keep having frightening visions of a great war at Camp Half-Blood that could be the end of all of them.

The Greek god Apollo is still in the persona of ungifted human teenager Lester Papadopoulos. Now Lester and his demigod friends must go through the Labyrinth to find the third emperor-- and an Oracle who speaks in word puzzles-- somewhere in the American Southwest. But the longer he stays mortal, the weaker he grows... and the less confident that he will be able to regain his place on Mount Olympus.

Magnus Chase has always been a troubled kid. Since his mother's mysterious death, he's lived alone on the streets of Boston, surviving by his wits, keeping one step ahead of the police and the truant officers. One day, he is tracked down by a man he's never met -- a man his mother claimed was dangerous. The man tells him an impossible secret: Magnus is the son of a Norse god. The Viking myths are true. The gods of Asgard are preparing for war. Trolls,...

The disappearance of the goddess Artemis while out hunting a rare, ancient monster, prompts a group of her followers to join 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.