"Magic, monsters, and mayhem abound when Percy Jackson and Annabeth Chase meet Carter and Sadie Kane for the first time. Weird creatures are appearing in unexpected places, and the demigods and magicians have to team up to take them down. As they battle with Celestial Bronze and glowing hieroglyphs, the four heroes find that they have a lot in commonand more power than they ever thought possible. But will their combined forces be enough to foil an ancient enemy who is mixing Greek and Egyptian incantations for an evil purpose?"--From publisher.

"Percy and Annabeth meet the Kanes" --Cover. "The Son of Sobek was first published as a short story in the paperback edition of The Son of Neptune by Rick Riordan, July 2013. The Staff of Serapis was first published as a short story in the paperback edition of The Mark of Athena by Rick Riordan, April 2014. The Crown of Ptolemy was first published as a short story in the paperback edition of The House of Hades by Rick Riordan, March 2015." The son of Sobek -- The staff of Serapis -- The crown of Ptolemy.