Fans of the Percy Jackson series will not be disappointed in this spin-off series. Future books in the series will feature more of the Percy Jackson series heroes working alongside the three new heroes, and so while this book was good at setting up the new threat to Mt. Olympus, even better books are yet to come. The introduction of the Roman counterparts to the Greek gods and goddesses holds a lot of promise, and it will be interesting to see how Riordan ties it all together.
Recommended for grades 5-9.