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William Duffy

William Duffy

Acting

Biography

William Duffy is an actor.

Known For

27 Works

NCIS

NCIS

2003

tv

The Mentalist

The Mentalist

2008

tv

Law & Order

Law & Order

1990

tv

Criminal Minds

Criminal Minds

2005

tv

Bosch

Bosch

2015

tv

Beverly Hills, 90210

Beverly Hills, 90210

1990

tv

Heroes

Heroes

2006

tv

The West Wing

The West Wing

1999

tv

Scandal

Scandal

2012

tv

It's Always Sunny in Philadelphia

It's Always Sunny in Philadelphia

2005

tv

The O.C.

The O.C.

2003

tv

Parenthood

Parenthood

2010

tv