User blog:Jabberwokk/Riordans other books

So, I started reading the Percy Jackson series after watching the film. By the time that week was over I had acquired digital copies of all the books and audiobooks for the entire Percy Jacson series, as well as the Lost Hero. The next week lead to me finishing all of those...and I want more. Seeing as how I cannot get more until October, do you guys reccomend Riordans other books?