William Duffy is an actor, known for The West Wing (1999), It's Always Sunny in Philadelphia (2005) and Scandal (2012).
Banshee - Season 3
Its Always Sunny in Philadelphia - Season 6
Karla
Parenthood - Season 6
NCIS - Season 13
The Big C - Season 3
Beverly Hills 90210 - Season 7
Tyson
NCIS - Season 18
Scandal - Season 4
Beverly Hills 90210 - Season 1
Bosch - Season 6
Banshee - Season 4
The Mentalist - Season 6
The Mentalist - Season 7
Its Always Sunny in Philadelphia - Season 9
Hearts Afire - Season 2
Its Always Sunny in Philadelphia - Season 16
California Dreams - Season 1
High Incident - Season 2
Studio 60 on the Sunset Strip - Season 1
Beverly Hills 90210 - Season 2
The West Wing - Season 7
The Division - Season 2
Journeyman - Season 1
Blast from the Past