17 books
Python Programming
Master Plan
Following the Trail of Blood
Stories at the Edge of Time
An Interlude in Dreamland
A Small Box of Chaos
Even More Puzzicles
Inspector Cross
3D Puzzle Book
Murder in Locked Box
More Puzzicles
Cut and Construct Your Own Brontosaurus
A Call for Murder
Puzzicles
On the Trail of Blood
Secret Gold Jaguar
When Good Things Happen to Bad People