9 from the Nine Worlds
Rick Riordan
Magnus Chase and the Gods of Asgard (5)
The Son of Neptune
The Heroes of Olympus (2)
The Lightning Thief
Percy Jackson and the Olympians (1)
Unraveled
Shannon Messenger
Keeper of the Lost Cities (9.5)
The House of Hades
The Heroes of Olympus (1)
The Blood of Olympus
The Heroes of Olympus (5)