| #2 |  The Lightning Thief
| 1,255 reads |
| #3 |  The Battle of the Labyrinth
| 488 reads |
| #4 |  The Sea of Monsters
| 824 reads |
| #5 |  The Titan's Curse
| 766 reads |
| #6 |  The Last Olympian
| 681 reads |
| #7 |  The Lost Hero
| 444 reads |
| #8 |  The Mark of Athena
| 356 reads |
| #9 |  The Son of Neptune
| 385 reads |
| #10 |  The Red Pyramid
| 248 reads |
| #11 |  The House of Hades
| 321 reads |
| #12 |  The Blood of Olympus
| 299 reads |
| #13 |  The Throne of Fire
| 158 reads |
| #14 |  The Sword of Summer
| 189 reads |
| #15 |  The Serpent's Shadow
| 134 reads |
| #16 |  The Hidden Oracle
| 187 reads |
| #17 |  The 39 Clues Book 1: The Maze of Bones
| 60 reads |
| #18 |  The Hammer of Thor
| 132 reads |
| #19 |  The Dark Prophecy
| 127 reads |
| #20 |  The Ship of the Dead
| 98 reads |
| #21 |  The Son of Sobek
| 40 reads |
| #22 |  The Burning Maze
| 37 reads |
| #23 |  The Staff of Serapis
| 29 reads |
| #24 |  The Crown of Ptolemy The Crown of Ptolemy
| 22 reads |
