The Hidden Oracle
Rick Riordan
The Trials of Apollo (1)
The Son of Neptune
The Heroes of Olympus (2)
The Last Olympian
Percy Jackson and the Olympians (5)
9 from the Nine Worlds
Magnus Chase and the Gods of Asgard (5)
The Sun and the Star
Rick Riordan & Mark Oshiro
Nico Di angelo Adventures (1)
The Tower of Nero
The Trials of Apollo (5)