The Mystery of the Vanished Prince: Book 9

The Mystery of the Secret Room: Book 3

The Mystery of the Hidden House: Book 6

The Mystery of Holly Lane: Book 11

The Mystery of the Strange Messages: Book 14

The Mystery of the Missing Necklace: Book 5

The Mystery of the Strange Bundle: Book 10

The Mystery of the Disappearing Cat: Book 2

The Mystery of the Missing Man: Book 13

The Mystery of the Spiteful Letters: Book 4

The Mystery of the Invisible Thief: Book 8

The Mystery of Tally-Ho Cottage: Book 12

The Mystery Series: The Mystery of Banshee Towers: Book 15

The Mystery of the Burnt Cottage: Book 1

The Tyrant's Tomb (The Trials of Apollo Book 4)