how many percy jackson and the olympians books are there
Percy Jackson & the Olympians Percy Jackson & the Olympians, often shortened to Percy Jackson, is a pentalogy of fantasy adventure novels written by American author Rick Riordan, and the first book series in the Camp Half-Blood Chronicles.[1] Five supplementary books, along with three graphic novels, have also been released. More than 45 million copies of the books have been sold in more than 35 countries.[2]