| title | ISBN-13 | year of publication |
|---|---|---|
| A Guide to Working as a Confidential Police Informant or Intelligence Agent | 978-0-9574641-7-9 | 2014 |
| A guide to working as a Confidential Police Informant or Intelligence Agent | 978-0-9574641-8-6 | 2014 |
| An Introduction to Budo Self-Defence for the 21st Century | 978-1-7020-0078-9 | 2019 |
| Berlin City of Spies | 978-0-9574641-2-4 | 2013 |
| Enemies of the State: A Sensational Expose of the Security Services | 978-0-671-85195-8 | 1994 |
| The Bushido Conspiracy | 978-0-9574641-6-2 | 2013 |
Independently published · Make Words Count · Simon & Schuster