Brian Geraghty

Biography

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.

Career Overview

Brian Geraghty has 55 screen credits in a career dating back to 1990. Their work spans 2 cinematic universes — most prominently When a Stranger Calls with 1 titles. Signature works include 1923, The Hurt Locker, Blindfire. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For

Acting

Gender

male

Known Credits

55

Birth Date

1974-05-13 00:00:00

Birth Place

Toms River, New Jersey, USA

Known For

• 

  1923
• 

  The Hurt Locker
• 

  Blindfire
• 

  Open House
• 

  Krews
• 

  Love Lies Bleeding

Associated Universes

Universe traveler — spans 2 universes

• When a Stranger Calls (1 titles)
• Jarhead Collection (1 titles)

Frequent Collaborators

• Jack Schuster (3 collaborations)
• Hilbert Hakim (3 collaborations)
• John Papsidera (2 collaborations)
• Taylor Sheridan (2 collaborations)
• Tommy Turtle (2 collaborations)
• Kathryn Bigelow (2 collaborations)
• Mark Boal (2 collaborations)
• Alex Ullrich (2 collaborations)
• Robert Troy (2 collaborations)
• Paul N.J. Ottosson (2 collaborations)

Credits

• actors (54 credits)

  • "Jarhead" Diaries

    Self

    actor

    actors
    2026
  • Kockroach

    actor

    actors
    2026
  • The Luckiest Man in America

    Ed

    actor

    actors
    2025
  • Red Right Hand

    Sheriff Hollister

    actor

    actors
    2024
  • 1923

    Zane Davis

    actor

    actors

    - A Dream and a Memory (2025) ... Zane Davis actor actors

    - The Mountain Teeth of Monsters (2025) ... Zane Davis actor actors

    - Only Gunshots to Guide Us (2025) ... Zane Davis actor actors

    - Journey the Rivers of Iron (2025) ... Zane Davis actor actors

    - Wrap Thee in Terror (2025) ... Zane Davis actor actors
    2022
  • Blindfire

    Will Bishop

    actor

    actors
    2020
  • Big Sky

    - Catch a Few Fish (2022) ... Ronald Pergman actor actors

    - Family Matters (2022) ... Ronald Pergman actor actors

    - Keys to the Kingdom (2022) ... Ronald Pergman actor actors

    - The Muffin or the Hammer (2022) ... Ronald Pergman actor actors

    - Dead Man's Float (2022) ... Ronald Pergman actor actors
    2020
  • Faith

    Chris

    actor

    actors
    2019
  • Extremely Wicked, Shockingly Evil and Vile

    Florida Public Defender Dan Dowd

    actor

    actors
    2019
  • Avenues

    Jack

    actor

    actors
    2019
  • The Standoff at Sparrow Creek

    Noah

    actor

    actors
    2019
  • My Days of Mercy

    Weldon

    actor

    actors
    2018
  • The Alienist

    - Castle in the Sky (2018) ... Theodore Roosevelt actor actors

    - Requiem (2018) ... Theodore Roosevelt actor actors

    - Psychopathia Sexualis (2018) ... Theodore Roosevelt actor actors

    - Many Sainted Men (2018) ... Theodore Roosevelt actor actors

    - Ascension (2018) ... Theodore Roosevelt actor actors
    2018
  • Wildlike

    Uncle

    actor

    actors
    2015
  • Verbatim: The Ferguson Case

    Darren Wilson

    actor

    actors
    2015
  • Chicago Med

    - Disorder (2016) ... Sean Roman actor actors

    - Saints (2016) ... Sean Roman actor actors

    - iNO (2015) ... Sean Roman actor actors
    2015
  • The Identical

    William Hemsley

    actor

    actors
    2014
  • Loitering with Intent

    Devon

    actor

    actors
    2014
  • Date and Switch

    Lars

    actor

    actors
    2014
  • Chicago P.D.

    - Start Digging (2016) ... Sean Roman actor actors

    - She's Got Us (2016) ... Sean Roman actor actors

    - Justice (2016) ... Sean Roman actor actors

    - In a Duffel Bag (2016) ... Sean Roman actor actors

    - If We Were Normal (2016) ... Sean Roman actor actors
    2014
  • Kilimanjaro

    Doug

    actor

    actors
    2013
  • Ass Backwards

    Brian

    actor

    actors
    2013
  • Refuge

    Sam

    actor

    actors
    2012
  • 10 Years

    Garrity

    actor

    actors
    2012
  • Heroes and Demons

    Dan (segment "The Second Bakery Attack")

    actor

    actors
    2012
  • Flight

    Ken Evans

    actor

    actors
    2012
  • ATM

    David Hargrove

    actor

    actors
    2012
  • Chicago Fire

    - Off the Grid (I) (2020) ... Sean Roman actor actors

    - Two Ts (2016) ... Sean Roman actor actors

    - All Hard Parts (2016) ... Sean Roman actor actors

    - I Walk Away (2015) ... Sean Roman actor actors

    - Headlong Toward Disaster (2015) ... Sean Roman actor actors
    2012
  • Seven Days in Utopia

    Jake

    actor

    actors
    2011
  • The Second Bakery Attack

    Dan

    actor

    actors
    2010
  • Open House

    David

    actor

    actors
    2010
  • The Chameleon

    Brian Jansen

    actor

    actors
    2010
  • Bastard

    Man

    actor

    actors
    2010
  • Krews

    Henry McFarlin

    actor

    actors
    2010
  • Jake Gyllenhaal Challenges the Winner of the Nobel Peace Prize

    Fergus O'Donnell (archive footage)

    actor

    actors
    2010
  • Boardwalk Empire

    - New York Sour (2013) ... Agent Warren Knox actor actors
    2010
  • Easier with Practice

    Davy Mitchell

    actor

    actors
    2009
  • The Hurt Locker

    Specialist Owen Eldridge

    actor

    actors
    2008
  • Love Lies Bleeding

    Duke

    actor

    actors
    2008
  • True Blood

    - Let's Boot and Rally (2012) ... Brian Eller actor actors

    - We'll Meet Again (2012) ... Brian Eller actor actors

    - Authority Always Wins (2012) ... Brian Eller actor actors
    2008
  • An American Crime

    Bradley

    actor

    actors
    2007
  • We Are Marshall

    Tom Bogdan

    actor

    actors
    2006
  • Cruel World

    Collin

    actor

    actors
    2006
  • The Guardian

    Billy Hodge

    actor

    actors
    2006
  • Bobby

    Jimmy

    actor

    actors
    2006
  • Conversations with Other Women

    Groom

    actor

    actors
    2006
  • Art School Confidential

    Stoob

    actor

    actors
    2006
  • When a Stranger Calls

    Bobby

    actor

    actors
    2006
  • The Elder Son

    Greg

    actor

    actors
    2006
  • Jarhead

    Fergus O'Donnell

    actor

    actors
    2005
  • Town Diary

    Young Frank Ryan

    actor

    actors
    2002
  • Law & Order: Special Victims Unit

    - Daydream Believer (III) (2015) ... Sean Roman actor actors

    - Quickie (2010) ... Peter Butler actor actors
    1999
  • The Sopranos

    - The Legend of Tennessee Moltisanti (1999) ... Counter Boy actor actors
    1999
  • Law & Order

    - Hate (1999) ... Phillip Ludwick actor actors
    1990

• production (1 credits)

  • The Stanford Prison Experiment

    executive producer

    production
    2015