Riordan, Rick <br/><br/>
Heroes of Olympus :   the son of Neptune 
 The son of Neptune 

 - London :   Puffin,   2001 
 - 519 p.  
<br/><br/> Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled. 
<br/><br/><label>ISBN: </label>9780141335735 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mythology, Roman--Juvenile fiction<br/>Mythology, Greek--Juvenile fiction