The Lost Hero by Rick Riordan is set in the same world as the Percy Jackson series. This series is narrated by three characters. Piper, a daughter of Athena whose movie star father has been kidnapped, Leo, a son of Hephaestus who can fix anything mechanical and who can withstand fire and Jason the son of Zeus who can not remember any of his past but who identifies with Romans. These three heroes must solve the prophecy to rescue Hera who is being held against her will.
This was a fantastic introduction to a new series. It was just enough familiar to make readers happy combined with enough new concepts and characters to make the series distinct and separate from the Percy Jackson series. I loved the book and was able to tear through it very quickly.
Appropriateness: This book is much thicker and more descriptive than the last series and it has a bit of a romance thrown which makes it a tad more mature than the last series. The Lexile is 660 putting it around a fourth grade level. Because of it's length and literary references I would recommend this book to a middle school audience (although younger advanced readers who can handle the length will enjoy the book) this is a series that boys will love.