
Brian Geraghty
Acting
Brian Timothy Geraghty (born May 13, 1974) is an American film and television actor, best known for his roles as Ronald Pergman on Big Sky, Dale on the series The Fugitive, Gene Colder on Briarpatch, Theodore Roosevelt on The Alienist, Police Officer Sean Roman on Chicago P.D., Specialist Owen Eldredge in the Academy Award-winning film The Hurt Locker, Tom Bogdan in We Are Marshall, Billy Hodge in The Guardian, and Fergus O'Donnell in Jarhead.
Known For

Law & Order: Special Victims Unit
1999 · tv

Law & Order
1990 · tv

Chicago Fire
2012 · tv

The Sopranos
1999 · tv

Chicago P.D.
2014 · tv

Chicago Med
2015 · tv

True Blood
2008 · tv

Boardwalk Empire
2010 · tv

1923
2022 · tv

Big Sky
2020 · tv

The Alienist
2018 · tv

Ed
2000 · tv

The Hurt Locker
2008 · movie

Flight
2012 · movie

Jarhead
2005 · movie

Extremely Wicked, Shockingly Evil and Vile
2019 · movie

The Guardian
2006 · movie

Bobby
2006 · movie

Gaslit
2022 · tv

Red Right Hand
2024 · movie

An American Crime
2007 · movie

The Fugitive
2020 · tv

We Are Marshall
2006 · movie

The Luckiest Man in America
2025 · movie

The Elder Son
2006 · movie

Art School Confidential
2006 · movie

10 Years
2012 · movie

Blindfire
2020 · movie

My Days of Mercy
2018 · movie

When a Stranger Calls
2006 · movie