1.The Son of Sobek：Carter Kane is investigating rumored sightings of a monster on Long Island when he runs into something else: a mysterious boy named Percy Jackson. And their meeting isn't exactly friendly. . . .
2.The Staff of Serapis：In this adventure, Annabeth encounters more oddities in the subway than usual, including a two-headed monster and a younger blond girl who reminds her a little of herself. This is the story fans have asked for, in which Annabeth Chase teams up with Sadie Kane. The demigod daughter of Athena and the young magician from Brooklyn House take on a larger-than-life foe from the ancient world. Perhaps even more disturbing than the power-hungry god they encounter is the revelation that he is being controlled by someone—someone all too familiar to Sadie.
3.The Crown of Ptolemy：In their first encounter, demigod Percy Jackson and magician Carter Kane had to battle a giant crocodile on Long Island. A month later, Annabeth Chase ran into Carter's sister, Sadie, on the A train to Rockaway, where the pair fought a god named Serapis. Now trouble is brewing again, this time on Governor's Island. An ancient Egyptian magician named Setne has come back from the dead and is experimenting with Egyptian and Greek magic, trying to become a god himself. He's so powerful and tricky that all four—Percy, Annabeth, Carter, and Sadie—have to team up against him. But their usual weapons and spells aren't going to cut it this time. Will the heroes be taken down by a wannabe god who looks like Elvis, or will they rise to the challenge? Told from Percy's point of view, this third demigod-magician crossover story has all of the spunk and action that Rick Riordan fans crave.