Heroes of Olympus Series - Rick Riordan

This is the spin-off series to the Percy Jackson and The Olympians series. A new Great Prophecy, a new generation of demigods – the adventures have just begun! In this new five-book series, expect to see your old friends from the Percy Jackson books along with a great new cast of main characters, as the heroes of Camp Half-Blood embark on their most dangerous challenge yet. [Goodreads.com]