Bernd Haase · Bernd Haß · Bernd Hauk
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Secret Agent X:: Claws of the Corpse Cult | 978-1-59224-175-0 | 2005 |
| Secret Agent "X": The Assassins League | 978-1-55742-964-3 | 2006 |
| Secret Agent X: The Fear Merchants | 978-0-8095-5752-3 | 2007 |
| Secret Agent "X": The Legions of the Living Dead | 978-0-8095-1069-6 | 2004 |