The Case of the Baker Street Irregular

Percy Jackson and the Lightning Thief (Book 1)

The Case of the Indian Curse

Percy Jackson and the Last Olympian (Book 5)

Percy Jackson and the Sea of Monsters (Book 2)

The Case of the Etruscan Treasure

Percy Jackson and the Titan's Curse (Book 3)

The Testing of Tertius

Percy Jackson and the Battle of the Labyrinth (Book 4)

The Case of the Murdered Players

The Lost Hero (Heroes of Olympus Book 1)

The Case of the Somerville Secret

Percy Jackson and the Olympians: The Chalice of the Gods: (A BRAND NEW PERCY JACKSON ADVENTURE)

The Case of the Frightened Friend

The Burning Maze (The Trials of Apollo Book 3)