Richard Russell "Rick" Riordan, Jr. (born June 5, 1964) is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 author best known for writing the Percy Jackson & the Olympians

Percy Jackson & the Olympians

Percy Jackson & the Olympians is a pentalogy of adventure and fantasy fiction books authored by Rick Riordan. The series consists of five books, as well as spin-off titles such as The Demigod Files and Demigods and Monsters. Set in the United States, the books are predominantly based on Greek...

series. He also wrote the Tres Navarre mystery series for adults and helped to edit Demigods and Monsters, a collection of essays on the topic of his Percy Jackson series. He helped develop the 10 books in The 39 Clues

The 39 Clues

The 39 Clues consists of two series of adventure books, The Clue Hunt and Cahills vs. Vespers, combining reading, online gaming, and card collecting...

series, published by Scholastic Corporation, and wrote the first book in the series, The Maze of Bones

The Maze of Bones

The Maze of Bones was published by Scholastic on September 9, 2008. The story arc of the series has been established by Riordan, but a collaboration of six other authors will continue to write the story through the next nine books.-Plot introduction :...

.