Author Rick Riordan Published by Puffin ISBN 9780141346830 EAN 9780141346830 Bic Code Y Cover Paperback
After blowing up yet another school, Percy is forced to flee to Camp Half Blood, where he finds all is not well. A dangerous enemy, intent on destroying the secret training camp for young demi-gods, has found a way in through an ancient labyrinth. Percy and his friends must unravel the mysteries of the maze to stop this attack.
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