| Casing The Promised Land | 1980 |
| The Alienist | 1994 |
| The Devil Soldier: The Story of Frederick Townsend Ward | 1995 |
| The Angel of Darkness | 1997 |
| Killing Time | 2000 |
| The Italian Secretary: A Further Adventure of Sherlock Holmes | 2005 |
| Non-Fiction | |
| America Invulnerable: The Quest for Absolute Security from 1812 to Star Wars | 1988 |
| The Lessons of Terror: A History of Warfare Against Civilians | 2002 |