Rick Riordan has now sold an incredible 55 million copies of his books worldwide
This is Book 1 in the Heroes of Olympus Series. See all Heroes of Olympus books here.
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Rick Riordan, dubbed 'storyteller of the gods' by Publishers Weekly, is the author of five New York Times number-one bestselling book series with millions of copies sold throughout the world: Percy Jackson, the Heroes of Olympus and the Trials of Apollo, based on Greek and Roman mythology; the Kane Chronicles, based on Egyptian mythology; and Magnus Chase, b
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