William Duffy
William Duffy is an actor.
Known for
- The Mentalist (2008)
- Law & Order (1990)
- NCIS (2003)
- Criminal Minds (2005)
- The West Wing (1999)
- It's Always Sunny in Philadelphia (2005)
- Beverly Hills, 90210 (1990)
- Heroes (2006)
- Scandal (2012)
- Bosch (2015)
- The O.C. (2003)
- Parenthood (2010)
- The Division (2001)
- American Dreams (2002)
- Hearts Afire (1992)
- Blast from the Past (1999)
- Carpoolers (2007)
- Sniper 3 (2004)
- The Two Jakes (1990)
- Waist Deep (2006)