6 books in series
The Heroes of Olympus
The Heroes of Olympus is a 6-book series with 6 primary works first released in 2010 with contributions by Rick Riordan and Nick Chamian.
#1
#2
#2 of 5 in The Heroes of Olympus
2011 • 720 Readers • 544 pages • 4.2
#3
#3 of 5 in The Heroes of Olympus
2012 • 689 Readers • 604 pages • 4.2
#4
#4 of 5 in The Heroes of Olympus
2013 • 630 Readers • 608 pages • 4.3
#4.5
13 Camp Half-Blood Chronicles
2014 • 10 Readers • 432 pages • 4
#5
#5 of 5 in The Heroes of Olympus
2014 • 584 Readers • 544 pages • 4.2