- "America's War on Drugs" (2019)
- "Κρυμμένος Χίτλερ" (2012)
- "The Boys of '33:FDR's First Secret Service Detail" (2008)
- "Εις το όνομα του Θεού" (2006)
- "Operation Thunderbolt" (2005)
- "The Brotherhood" (2004)
- "The Third Man:John Carradine's Life in Film" (2003)
- "The Man Behind the Myth:An Investigation Into the Mystery Surrounding Dr. Death" (2001)
- "The First Jewish Detective" (1998)
- "Τζάκποτ:Η δολοφονία λοταρίας των 5 εκατομμυρίων δολαρίων" (1996)
- "Hitler's Last Days:The Plot to Save Hitler" (1994)
- "The JFK Myth" (1993)
- "Ποιος σκότωσε τον JFK;" (1992)
Βιβλία μυθοπλασίας:
- "The Berlin Conspiracy" (2015)
- "Killing Hitler" (2013)
- "Hitler's Last Plot:The Dark Tale of SS-Colonel Otto Skorzeny" (2011)
- "The Shadow War:The Secret Wars of Osama Bin Laden, Yasser Arafat, and Saddam Hussein" (2009)
- "The Boys in the Cave" (2007)
- "The Death Artist" (2002)