After learning that he is the son of a mortal woman and Poseidon, god of the sea, twelve-year-old Percy is sent to a summer camp for demigods like himself, and joins his new friends on a quest to prevent a war between the gods.

After their father's research experiment at the British Museum unleashes the Egyptian god Set, Carter and Sadie Kane embark on a dangerous journey across the globe--a quest which brings them ever closer to the truth about their family, and their links to a secret order that has existed since the time of the pharaohs.

Four short stories plus original art, interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.

Lately, seventh grader Nizhoni Begay has been able to detect monsters, like that man in the fancy suit who was in the bleachers at her basketball game. Turns out he's Mr. Charles, her dad's new boss at the oil and gas company, and he's alarmingly interested in Nizhoni and her brother, Mac, their Navajo heritage, and the legend of the Hero Twins. Nizhoni knows he's a threat, but her father won't believe her. When Dad disappears the next day, leaving...