Tyrant's Tomb, The-The Trials of Apollo, Book Four

It's not easy being Apollo, especially when you've been turned into a human and banished from Olympus. On his path to restoring five ancient oracles and reclaiming his godly powers, Apollo (aka Lester Papadopoulos) has faced both triumphs and tragedies. Now his journey takes him to Camp Jupiter in the San Francisco Bay Area, where the Roman demigods are preparing for a desperate last stand against the evil Triumvirate of Roman emperors. Hazel, Reyna, Frank, Tyson, Ella, and many other old friends will need Apollo's aid to survive the onslaught. Unfortunately, the answer to their salvation lies in the forgotten tomb of a Roman ruler . . . someone even worse than the emperors Apollo has already faced.

• The Burning Maze (Trials of Apollo, The Book Three)
• 9 from the Nine Worlds (Magnus Chase and the Gods of Asgard)
• The Fire Keeper (A Storm Runner Novel, Book 2)
• The Dark Prophecy (The Trials of Apollo, Book Two)
• Master of the Phantom Isle (Dragonwatch)
• The Burning Maze (Trials of Apollo, The Book Three)
• The Hidden Oracle (Trials of Apollo, Book One)
• The Trials of Apollo Book Two The Dark Prophecy
• The Poison Jungle (Wings of Fire, Book 13)
• The Trials of Apollo, Book 1: The Hidden Oracle