Percy Jackson and the Olympians is a 11-book series with 7 primary works first released in 1962 with contributions by Rick Riordan and Mary-Jane Knight.
2008 • 9 Readers • 1,032 pages • 4.8
2009 • 8 Readers • 1,744 pages • 4
2008 • 27 Readers • 156 pages • 3.3