William Duffy is an actor.
Law & Order
1990
NCIS
2003
The Mentalist
2008
Criminal Minds
2005
The West Wing
1999
Beverly Hills, 90210
Bosch
2015
Heroes
2006
Scandal
2012
It's Always Sunny in Philadelphia
A West Wing Special to Benefit When We All Vote
2020
The Ascent
2010
Waist Deep
Karla
Sniper 3
2004
Blast from the Past
Double Tap
1997
Betrayed by Love
1994
The Two Jakes
Loving
1970
Brainstorm
1965
Parenthood
Carpoolers
2007
The O.C.
American Dreams
2002
The Division
2001
Hearts Afire
1992
