Book 1
The Prime-Time Burglars
David Cole
Book 2
A Sequence of Events
David Cole
Book 3
An Unusual Pattern
David Cole
Book 4
An Encrypted Clue
David Cole
Book 5
An Incorrect Solution
David Cole
Book 6
The Triangle Secret
David Cole
Book 7
A Knotty Problem
David Cole
Book 8
An Artificial Test
David Cole
Book 9
An Unsolved Proof
David Cole