Rick Riordan is the author of the # 1 New York Times bestselling The Heroes of Olympus, Book One: The Lost Hero; The Heroes of Olympus, Book Two: The Son of Neptune; The Heroes of Olympus Book Three: The Mark of Athena; The Heroes of Olympus Book Four: The House of Hades; the #1 New York Times bestselling The Kane Chronicles, Book One: The Red Pyramid; The Kane Chronicles, Book Two: The Throne of Fire; The Kane Chronicles, Book Three: The Serpent's Shadow; as well as the five books in the #1 New York Times bestselling Percy Jackson and the Olympians series. His previous novels for adults include the hugely popular Tres Navarre series, winner of the top three awards in the mystery genre. He lives in Boston, Massachusetts with his wife and two sons.
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The Cahills aren't the only family searching for the Clues. . . .The Cahills thought they were the most powerful family the world had ever known. They thought they were the only ones who knew about Gideon Cahill and his Clues. The Cahills were wrong. Powe... SEE MORE