The next book is called House of Hades and will be coming out Fall 2013
no it is not
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.
It's out!
The Mark of Athena
The Mark of Athena
The Mark of Athena.
The mark of Athena
The third book of The Heroes of Olympus series by Rick Riordan, titled The Mark of Athena has not yet been released.
The third book, The Mark of Athena, will be out fall of 2012 :D
The Mark of Athena which came out on October 2, 2012
He is writing The Mark of Athena, the third book in the Heroes of Olympus series.
"Heroes of Olympus, The , Book Three: The Mark of Athena" has a release date of October 2, 2012 .