William Duffy is an actor.
Known For
Acting
Gender
Male
IMDB Profile
Law & Order
1990
Criminal Minds
2005
The Mentalist
2008
It's Always Sunny in Philadelphia
The West Wing
1999
Bosch
2015
The O.C.
2003
Scandal
2012
Heroes
2006
Parenthood
2010
A West Wing Special to Benefit When We All Vote
2020
The Ascent
Waist Deep
Karla
