The Hidden Oracle (The Trials of Apollo Book 1) Other Books in This Series

The Dark Prophecy (The Trials of Apollo Book 2) The Dark Prophecy (The Trials of Apollo Book 2)
The Dark Prophecy (The Trials of Apollo Book 2)
2017
The Burning Maze (The Trials of Apollo Book 3) The Burning Maze (The Trials of Apollo Book 3)
The Burning Maze (The Trials of Apollo Book 3)
2018
The Tyrant's Tomb (The Trials of Apollo Book 4) The Tyrant's Tomb (The Trials of Apollo Book 4)
The Tyrant's Tomb (The Trials of Apollo Book 4)
2019
The Tower of Nero (The Trials of Apollo Book 5) The Tower of Nero (The Trials of Apollo Book 5)
The Tower of Nero (The Trials of Apollo Book 5)
2020
Camp Jupiter Classified Camp Jupiter Classified
Camp Jupiter Classified
2020