CICERO SERIES
Imperium ......................... 2006
Conspiracy ....................... 2008
OMNIBUS
Enigma/Archangel ................. 2007
NON-FICTION
A Higher Form of Killing: The Secret Story of Gas and Germ Warfare (with Jeremy Paxman) ..... 1982
Selling Hitler: The Story of the Hitler Diaries ............ 1996