The Trials of Apollo Books in Order
Part ofRick Riordan Books in OrderBrowse The Trials of Apollo books by Rick Riordan in order, with summaries, series background on Apollo’s punishment, and guidance on how they follow Heroes of Olympus.
Last updated: December 22, 2025
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Publication Order
7 books
The Tower of Nero
by Rick Riordan
2020
In his final trial, Apollo returns to New York with Meg McCaffrey to face Nero in his own tower and then confront Python at Delphi. To save his friends and the mortal world, he must decide what kind of god he wants to be.
Camp Jupiter Classified
by Rick Riordan
2020
Written as the journal of Claudia, a new probatio in the Fourth Cohort, this story chronicles a string of strange accidents threatening Camp Jupiter. As Claudia investigates, she uncovers an ancient secret beneath the camp that could shatter the Roman legion.
The Tyrant's Tomb
by Rick Riordan
2019
Still battered from earlier quests, Lester and Meg travel to Camp Jupiter to deliver a fallen friend and warn the Romans about a looming invasion. There, they must help the legion prepare for war, confront undead enemies, and recover ancient weapons buried with forgotten emperors.
The Burning Maze
by Rick Riordan
2018
Guided by cryptic prophecies, Apollo and Meg follow the Labyrinth through California’s Central Valley in search of the Oracle of Erythraea. Joined by Grover Underwood and new demigod allies, they face an emperor’s scorched-earth scheme that threatens entire communities.
The Dark Prophecy
by Rick Riordan
2017
Still trapped in the mortal body of Lester Papadopoulos, Apollo travels to Indianapolis with Leo and Calypso to locate the Oracle of Trophonius. Inside a hidden waystation, they confront the emperor Commodus, rescue a lost child, and learn just how far the Triumvirate’s reach extends.
The Hidden Oracle
by Rick Riordan
2016
Zeus punishes Apollo by stripping his godhood and casting him to Earth as a mortal teen named Lester Papadopoulos. With help from street-smart demigod Meg McCaffrey and Camp Half-Blood, he must survive assassins, restore a lost oracle, and begin to understand mortality.
Percy Jackson and the Singer of Apollo
by Rick Riordan
2013
In this humorous short adventure, Percy and Grover are drafted by Apollo to track down a runaway magical singer before a major concert on Olympus. Their search through New York’s theater district turns into a chaotic chase that tests Percy’s patience and Grover’s nerves.
Series background & context
The Trials of Apollo takes the gleefully arrogant sun god and drops him into the worst punishment a deity can imagine: life as a powerless human teenager. Cast out of Olympus after the events of The Blood of Olympus, Apollo wakes up in a New York dumpster as Lester Papadopoulos and is told he must restore several long-silent oracles before he can earn back his divinity.
Across five books—The Hidden Oracle, The Dark Prophecy, The Burning Maze, The Tyrant’s Tomb, and The Tower of Nero—Lester stumbles from one disaster to the next, joined by demigod Meg McCaffrey and a rotation of familiar faces from Camp Half-Blood and Camp Jupiter. Together they battle Triumvirate Holdings, a shadow empire run by resurrected Roman emperors who have seized control of the oracles and threaten both camps.
The result is part road trip, part redemption story, and part backstage tour of the world Percy left behind.
Because Apollo narrates in first person, the tone swings between slapstick vanity and painful honesty about the harm he’s done over thousands of years. Readers see well-known characters—Nico di Angelo, Will Solace, Reyna, Frank, Hazel, Leo, and more—from a new angle as they help or hinder his attempts to change. The books also fill in important pieces of lore about the camps, the oracles, and what happens after Gaea’s fall.
This page sets out the Trials of Apollo reading order, explains where Camp Jupiter Classified fits, and offers spoiler-light summaries of each quest so you can decide when younger readers are ready. If you’ve finished Heroes of Olympus, this series is the natural next stop; if you’re arriving later, the background here will catch you up on who Apollo was before he hit rock bottom in Lester’s acne-covered skin.
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