From Percy Jackson: Camp Half-Blood Confidential (An Official Rick Riordan Companion Book): Your Real Guide to the Demigod Training Camp (Trials of Apollo)
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4
Brooklyn House Magician's Manual
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3
The Magnus Chase Book of Norse Deities and Mythical Creatures
Rick Riordan
5
9 From the Nine Worlds
Rick Riordan
5
The Demigod Diaries
Rick Riordan
5
The Demigod Files
Rick Riordan
4
Tyrant's Tomb
Rick Riordan
5
The Burning Maze
Rick Riordan
5
The Dark Prophecy
Rick Riordan
4
The Hidden Oracle
Rick Riordan
5
The Ship of the Dead
Rick Riordan
4
Magnus Chase and the Gods of Asgard, Book 2 The Hammer of Thor
Rick Riordan
5
Magnus Chase and the Gods of Asgard Book 1 The Sword of Summer
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4
Meet Addy
Connie Rose Porter
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The Serpent's Shadow
Rick Riordan
4
The throne of fire
Kevin R. Free
Katherine Kellgren
Rick Riordan
4
The Red Pyramid
Rick Riordan
5
The Heroes of Olympus, Book Five The Blood of Olympus
Rick Riordan
4
Weird Pennsylvania: Your Travel Guide to Pennsylvania's Local Legends and Best Kept Secrets
Matt Lake
5
The House of Hades
Rick Riordan
4
The Heroes of Olympus - Book Three: Mark of Athena