The Heroes of Olympus is a pentalogy of fantasy novels written by American author Rick Riordan. It is the second of four book series in the Camp Half-Blood Chronicles, succeeding Percy Jackson & the Olympians, and preceding The Trials of Apollo and The Nico di Angelo Adventures. The novels detail a conflict between Greek demigods, Roman demigods, and Gaea.
- Website
- https://rickriordan.com/series/the-heroes-of-olympus/
