0449014533
The mark of Athena
E-audio
Downloadable audio file.
Available as a download from OWWL2go with a valid OWWL borrower card.
Uniting with Jason, Piper, and Leo after their dangerous quest, Percy, Hazel, and Frank wonder who will be chosen to fulfill the Prophecy of Seven, completing their group's number, and sail with them to an ancient land to find the mysterious Doors of Death.