Well, The Lost Hero is out, The Son of Neptune is out, my next book The Daughter of Poseidon will be out by the end of this year or sooner, and The Mark of Athena will be out Fall 2012.
The series is called The Heroes of Olympus. The first book is called The Lost Hero.
The next book in the Heroes of Olympus series by Rick Riordan is "The Trials of Apollo: The Hidden Oracle."
I think he is planing on writing 5 books for the heroes of Olympus series
The third book of The Heroes of Olympus series by Rick Riordan, titled The Mark of Athena has not yet been released.
Approximately November 2013.
The book after "The Mark of Athena" is "The House of Hades," which is the fourth book in Rick Riordan's "Heroes of Olympus" series.
One book that I know Rick Riordan will be publishing is the second book in The Heroes of Olympus, and that will be out in the Fall of 2011.
The Heroes of Olympus was created in 2010.
The third book in The Heroes of Olympus series by Rick Riordan has not yet been released. It is titled The Mark of Athenaand is scheduled to be released Fall 2012.
The book, The Son of Neptune, is where the picture of Hazel Levesque comes out of or is seen in. It is the second book in Rick Riordan's Heroes of Olympus series.
No,but the author Rick Riordan is writhing the fourth book "THE HOUSE OF HADES" is coming out in september 2013.
Blood Of Olympus is the name of the 5th and rumored final book to the series of "The Heroes Of Olympus"