9 From the Nine Worlds

Rick Riordan

The Sun and the Star: A Nico di Angelo Adventure (Camp Half-Blood Chronicles, #17)

Rick Riordan

The Tower of Nero (The Trials of Apollo, #5)

Rick Riordan

The Ship of the Dead (Magnus Chase and the Gods of Asgard, #3)

Rick Riordan

The Tyrant's Tomb (The Trials of Apollo, #4)

Rick Riordan

The Burning Maze (The Trials of Apollo, #3)

Rick Riordan

The Hammer of Thor (Magnus Chase and the Gods of Asgard, #2)

Rick Riordan

The Dark Prophecy (The Trials of Apollo, #2)

Rick Riordan

Hotel Valhalla Guide to the Norse Worlds: Your Introduction to Deities, Mythical Beings & Fantastic Creatures (Magnus Chase and the Gods of Asgard)

Rick Riordan

Camp Jupiter Classified: A Probatio's Journal

Rick Riordan

Brooklyn House Magician's Manual: Your Guide to Egyptian Gods & Creatures, Glyphs & Spells, and More (The Kane Chronicles)

Rick Riordan

Camp Half-Blood Confidential: Your Real Guide to the Demigod Training Camp (The Trials of Apollo)

Rick Riordan

The Hidden Oracle (The Trials of Apollo, #1)

Rick Riordan

The Sword of Summer (Magnus Chase and the Gods of Asgard, #1)

Rick Riordan

Wrath of the Triple Goddess (Percy Jackson and the Olympians, #7)

Rick Riordan

The Chalice of the Gods (Percy Jackson and the Olympians, #6)

Rick Riordan

Demigods & Magicians: Percy and Annabeth Meet the Kanes

Rick Riordan

Percy Jackson's Greek Heroes

Rick Riordan

The Blood of Olympus (The Heroes of Olympus, #5)

Rick Riordan

The House of Hades (The Heroes of Olympus, #4)

Rick Riordan

The Mark of Athena (The Heroes of Olympus, #3)

Rick Riordan

Percy Jackson's Greek Gods

Rick Riordan

The Son of Neptune (The Heroes of Olympus, #2)

Rick Riordan

The Lost Hero (The Heroes of Olympus, #1)

Rick Riordan

The Serpent's Shadow (The Kane Chronicles, #3)

Rick Riordan

Percy Jackson and the Singer of Apollo (Camp Half-Blood Chronicles, #5.1)

Rick Riordan

The Last Olympian (Percy Jackson and the Olympians, #5)

Rick Riordan

The Throne of Fire (The Kane Chronicles, #2)

Rick Riordan

The Red Pyramid (The Kane Chronicles, #1)

Rick Riordan

The Lightning Thief (Percy Jackson and the Olympians, #1)

Rick Riordan