Percy Jackson & Kane Chronicles Crossover (Demigods and Magicians) (3 book series)

In this e-book short story by Rick Riordan, 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. . . .
Includes a sneak peek chapter from HOUSE OF HADES, Book Four in the Heroes of Olympus series.