
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.
Filmography46 titles

The Sopranos

Chicago P.D.

Chicago Fire

Chicago Med

1923

Boardwalk Empire

Law & Order: Special Victims Unit

True Blood

The Alienist

My Days of Mercy

The Hurt Locker

An American Crime

Law & Order

Big Sky

The Guardian

Extremely Wicked, Shockingly Evil and Vile

Gaslit

Flight

We Are Marshall

Blindfire

The Stanford Prison Experiment

Briarpatch

Jarhead

Red Right Hand

Easier with Practice

Bobby

The Luckiest Man in America

Conversations with Other Women

The Standoff at Sparrow Creek

Wildlike

Avenues

Art School Confidential

The Elder Son

Refuge

Date and Switch

10 Years

Seven Days in Utopia

When a Stranger Calls

The Chameleon

The Identical

ATM

Open House

I Know Who Killed Me

Cruel World

Loitering with Intent

Faith