Rick Riordan is the author of the previous books in the "New York Times" #1 best-selling Percy Jackson & the Olympians series: "The Lightning Thief"; "The Sea of Monsters";" The Titan's Curse"; "The Battle of the Labyrinth"; and "The Last Olympian." His previous novels for adults include the hugely popular Tres Navarre series, winner of the top three awards in the mystery genre. He lives in San Antonio, Texas, with his wife and two sons.
John Rocco illustrated the jackets for all five best-selling Percy Jackson and the Olympians books. He is the author and illustrator of the picture books Fu Finds the Way, Moonpowder and Wolf! Wolf! and the illustrator of Alice, by Whoopi Goldberg. John has won several awards, including the 2007 Borders Original Voices Award.