Cast & creator
Brian Geraghty
Best known for Law & Order: Special Victims Unit, Law & Order: Special Victims Unit, Law & Order
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.
Also known as: Brian Timothy Geraghty
45
film credits
16
television credits
60
1990–2025 · acting roles
6.3
average across scored titles
Signature credits
Known for
Across film & television
Filmography (61)
Showing 61 of 61 credits
Law & Order: Special Victims Unit
Peter Butler
1999Law & Order: Special Victims Unit
Sean Roman
1999
Law & Order
Phillip Ludwick
1990
Chicago P.D.
Sean Roman
2014
Chicago Fire
Sean Roman
2012
Chicago Med
Sean Roman
2015
The Sopranos
Counter Boy
1999
True Blood
Brian Eller
2008
Boardwalk Empire
Agent Warren Knox
2010
1923
Zane Davis
2022
Big Sky
Ronald Pergman
2020
Ed
Ari
2000
The Alienist
Theodore Roosevelt
2018
The Hurt Locker
Specialist Owen Eldridge
2008
The Guardian
Billy Hodge
2006
Flight
Ken Evans
2012
Gaslit
Peter
2022
When a Stranger Calls
Bobby
2006
The Fugitive
Dale
2020
Extremely Wicked, Shockingly Evil and Vile
Florida Public Defender Dan Dowd
2019
Jarhead
Fergus O'Donnell
2005
Red Right Hand
Sheriff Hollister
2024
Art School Confidential
Stoob
2006
I Know Who Killed Me
Jerrod Pointer
2007
Briarpatch
Gene Colder
2020
We Are Marshall
Tom Bogdan
2006
An American Crime
Bradley
2007
The Stanford Prison Experiment
Executive Producer
2015
My Days of Mercy
Weldon
2018
The Luckiest Man in America
Ed
2025
Date and Switch
Lars
2014
10 Years
Garrity
2012
Love Lies Bleeding
Duke
2008
Bobby
Jimmy
2006
Blindfire
Will Bishop
2020
The Standoff at Sparrow Creek
Noah
2019
The Chameleon
Brian Jansen
2010
ATM
David Hargrove
2012
"Jarhead" Diaries
Self
2006
Seven Days in Utopia
Jake
2011
Heroes and Demons
Dan (segment "The Second Bakery Attack")
2012Kockroach
Wildlike
Uncle
2015
Kilimanjaro
Doug
2013
Ass Backwards
Brian
2013
Conversations with Other Women
Groom
2006
Open House
David
2010
The Elder Son
Greg
2006
The Identical
William Hemsley
2014
Jake Gyllenhaal Challenges the Winner of the Nobel Peace Prize
Fergus O'Donnell (archive footage)
2010
Avenues
Jack
2019
Cruel World
Collin
2006
Verbatim: The Ferguson Case
Darren Wilson
2015
Faith
Chris
2019
Town Diary
Young Frank Ryan
2002
The Second Bakery Attack
Dan
2010
Loitering with Intent
Devon
2014
Easier with Practice
Davy Mitchell
2009
Bastard
Man
2010
Krews
Henry McFarlin
2010
Refuge
Sam
2012