- "America's War on Drugs" (2019)
- "Dold Hitler" (2012)
- "The Boys of '33:FDR's First Vita Husets Secret Service Detail" (2008)
- "I Guds namn" (2006)
- "Operation Thunderbolt" (2005)
- "Brödraskapet" (2004)
- "Den tredje mannen:John Carradines liv i film" (2003)
- "Mannen bakom myten:en undersökning av mysteriet kring Dr. Death" (2001)
- "Den första judiska detektiven" (1998)
- "Jackpot:The 5-Million-Dollar Lottery Murder" (1996)
- "Hitler's Last Days:The Plot to Save Hitler" (1994)
- "The JFK Myth" (1993)
- "Vem dödade JFK?" (1992)
Fiction-böcker:
- "The Berlin Conspiracy" (2015)
- "Killing Hitler" (2013)
- "Hitlers sista handling:The Dark Tale of SS-överste Otto Skorzeny" (2011)
- "The Shadow War:The Secret Wars of Usama Bin Laden, Yasser Arafat och Saddam Hussein" (2009)
- "Pojkarna i grottan" (2007)
- "The Death Artist" (2002)