Book 1
The Mystery of the Burnt Cottage
Enid Blyton
Book 2
The Mystery of the Disappearing Cat
Enid Blyton
Book 3
The Mystery of the Secret Room
Enid Blyton
Book 4
The Mystery of the Spiteful Letters
Enid Blyton
Book 5
The Mystery of the Missing Necklace
Enid Blyton
Book 6
The Mystery of the Hidden House
Enid Blyton
Book 7
The Mystery of the Pantomime Cat
Enid Blyton
Book 8
The Mystery of the Invisible Thief
Enid Blyton
Book 9
The Mystery of the Vanished Prince
Enid Blyton
Book 10
The Mystery of the Strange Bundle
Enid Blyton