Rick Riordan was born in 1964 and loves Greek mythology. He wrote the Percy Jackson book series about a boy who discovers he is half human and half god. In the first book, The Lightning Thief, Percy must prove his father's innocence by finding the real thief who stole Zeus's lightning bolt. He goes on an adventure with his friends to the Underworld and other mythical places to solve the mystery. The book appeals to those who enjoy action, adventure, and mysteries.