Rick Riordan first wrote his first book in 2005. The book, "The Lightning Thief," is the first novel in his popular "Percy Jackson & the Olympians" series.
Rick Riordan
Rick Riordan only wrote the first 39 Clues book.
The Lightning Thief was the first book in the series.
Rick Riordan directed all the books but he only wrote the first book The Maze of Bones. He also wrote The Vespers Rising along with three other authors.
rick riordan
Rick riordan
The Maze of Bones was written by Rick Riordan under the pseudonym of Jude Watson for the popular children's book series, The 39 Clues.
Rick Riordan's new book series 'Heroes of Olympus' will be releasing it's first book 'The Lost Hero' on October 12th, 2010.
he wrote 18 books totally so far
The exact time that Rick Riordan wrote Percy Jackson is unknown. It is estimated that he wrote the series in 2003 or 2004, as the first book was published in 2005.
Rick Riordan