The Hidden Oracle (The Trials of Apollo Book 1)
Rick Riordan
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The Dark Prophecy (The Trials of Apollo Book 2)
Rick Riordan
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The Burning Maze (The Trials of Apollo Book 3)
Rick Riordan
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The Tyrant's Tomb (The Trials of Apollo Book 4)
Rick Riordan
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The Tower of Nero (The Trials of Apollo Book 5)
Rick Riordan
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