The Heroes of Olympus

Series by Rick Riordan
Book 1 Rick Riordan: The Lost Hero (EBook, 2010, Disney Book Group)

The Lost Hero

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Book 2 Rick Riordan: The Son of Neptune (Hardcover, 2011, Penguin Publications)

The Son of Neptune

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Book 2.5 Rick Riordan: The Demigod Diaries (Hardcover, 2012, Disney-Hyperion Books)

The Demigod Diaries

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Book 3 Rick Riordan: The Mark of Athena (EBook, 2012, Disney Publishing Worldwide)

The Mark of Athena

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Unsorted Book Rick Riordan: The House of Hades (Hardcover, 2013, Disney Hyperion)

The House of Hades

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