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.

Edward Fosca is a murderer. Of this Mariana is certain. But Fosca is untouchable. A handsome and charismatic Greek tragedy professor at Cambridge University, Fosca is adored by staff and students alike-particularly by the members of a secret society of female students known as The Maidens. Mariana Andros is a brilliant but troubled group therapist who becomes fixated on The Maidens when one member, a friend of Mariana's niece Zoe, is found murdered...

If five of the demigods 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 of Death and prevent the giants from raising Gaea. But, Leo wonders, if the Doors are sealed, how will Percy and Annabeth be able to escape?

"Achilles Kallis vowed that he'd do whatever it took to claw his way into Olympus's inner circle. Now that the former Ares is gone and the coveted role has opened to anyone with the strength to claim it, he and his partner, Patroclus Fotos, plan to both compete and double their odds of winning. Neither expect the infamous beauty Helen Kasios to be part of the prize... or for the sparks that fly when the three of them meet. Zeus may have decided Helen...

"Looking for her grandmother, seventeen-year-old Delia goes to an isolated island in Maine and discovers a frightening and supernatural world where ancient Greek symbols adorn the buildings and secret ceremonies take place on the beach at night"--Provided by publisher.

When ten-year-old Zeus is kidnapped, he discovers he can defend himself with a magical thunderbolt.

When Zeus, Hades, and Poseidon continue on a new quest in the search for the Helm of Darkness, they discover many things in the Underworld that Hades does not fear except a giant three-headed dog.

John Hayden, a death deity, takes seventeen-year-old Pierce Oliviera back to the Underworld against her will to keep her safe from the Furies, but her family is still at risk and she, herself, may never escape his captivity.

Thirteen-year-old Odysseus, who longs to be a hero, has many opportunities to prove himself during an adventure which involves pirates and satyrs, a trip to Crete's Labyrinth, and the two young girls, Penelope and Helen, who play a major role in his future life.

The Olympians must face the fierce giant Typhon in order to find magic seeds that will help grow the earth after the terrible drought brought upon the land by Hyperion.