Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.

Twelve-year-old Percy Jackson learns he is a demigod, the son of a mortal woman and Poseidon, god of the sea. His mother sends him to a summer camp for demigods where he and his new friends set out on a quest to prevent a war between the gods.

"Dora Blake is a talented jewelry designer who lives under the thumb of her suspicious and odious uncle, who is running her late parents' beloved shop of antiquities into the ground. When he begins acting erratically after a mysterious Greek vase is delivered and locked in the basement, Dora enlists the help of Edward Lawrence, a young antiquarian scholar, who (unbeknownst to her) sees the vase as an opportunity to unlock his academic future. Dora...

What dangers do runaway demigods Luke and Thalia face on their way to Camp Half-Blood? Are Percy and Annabeth up to the task of rescuing stolen goods froma fire-breathing giant who doesn't take kindly to intruders? Rick Riordan answers these questions and more in three never-before-seen short stories that provide vital back-story to the Heroes of Olympus and Percy Jackson books. A special bonus story marks the publishing debut of Rick Riordan's son...

Athena learns that she is a goddess when she is summoned to Mount Olympus by her father, Zeus, and she must quickly adjust to her new status, make friends with the other godboys and goddessgirls, and catch up with all the studies she missed while attending mortal school.

When Eowulf, the pint-sized descendant of monster slayer Beowulf, decides to slay Cerberus, young Nico, Lula the sphinx, and Buck the unicorn must stop her or face the zombie apocalypse.

Thirteen-year-old Charlotte must rescue humankind again when the evil Philonecron captures her cousin Zee, and Poseidon himself sends a sea monster to eat the cruise ship on which Charlotte's parents are trapped.

Athena learns that she is a goddess when she is summoned to Mount Olympus by her father, Zeus, and she must quickly adjust to her new status, make friends with the other godboys and goddessgirls, and catch up with all the studies she missed while attending mortal school.

The otherworldly Karou struggles to come to terms with who and what she is, and how far she'll go to avenge her people.