The House of Hades
Rick Riordan
The Heroes of Olympus (1)
The Dark Prophecy
The Trials of Apollo (2)
The Ship of the Dead
Magnus Chase and the Gods of Asgard (3)
The Staff of Serapis
Demigods and Magicians (1)
How to Be a Pirate
Cressida Cowell
How to Train Your Dragon (2)