The Lost Hero by Rick Riordan

This book The Lost Hero is part of my favorite series, it's about three friends Jason, Leo, and Piper that meet a girl name Annabeth and find out they are half bloods of Greek gods and Annabeth takes them to a place called camp half- blood. If you are familiar to lightning thief this series has both Percy Jackson, Annabeth, and, Grover. Also the book The red pyramid is the start of a short series of Egyptian mythology and if you read both series; there is a book with characters from both series its very exciting I can't wait to read it myself.