book 4, Heroes of Olympus
No. of pages 720
This is book 4 in Heroes Of Olympus .
This book has been graded for interest at 8-12 years.
There are 720 pages in this book. This book was published 2015 by Disney-Hyperion .
Rick Riordan is the author of the hugely popular Percy Jackson series.
This book is in the following series: