Query: Novels by Rick Riordan
Relevant documents:
The Titan's Curse
The Battle of the Labyrinth
The Last Olympian
Vespers Rising
The House of Hades
The Lightning Thief
The Sea of Monsters
Big Red Tequila
The Maze of Bones
The Lost Hero
The Red Pyramid
The Son of Neptune
The Throne of Fire
The Mark of Athena
The Serpent's Shadow (Riordan novel)
The Blood of Olympus
Daughter of the Deep