The lightning thief by Riordan, Rick
The Tower of Nero by Riordan, Rick
Daughter of the deep by Riordan, Rick
The maze of bones by Riordan, Rick
The last olympian by Riordan, Rick
The battle of the Labyrinth by Riordan, Rick
The hammer of Thor by Riordan, Rick
The Titan's curse by Riordan, Rick
The burning maze by Riordan, Rick
The Ship of the Dead by Riordan, Rick
The throne of fire by Riordan, Rick
The chalice of the gods by Riordan, Rick
The Sword of Summer by Riordan, Rick