Brian Timothy Geraghty (born May 13, 1975) is an American actor, known
for his roles in the 2005 film Jarhead, the 2008 film The Hurt Locker,
and in the 2012 film Flight, along with his recurring role in the HBO
drama series Boardwalk Empire. He appeared as a regular on NBC's
Chicago P.D. from 2014 to 2016.Geraghty was born in Toms River, New
Jersey, and is of Irish descent. He graduated from Toms River High
School East in 1993 and then studied acting at the Neighborhood
Playhouse School of Theatre before beginning his professional career
in New York City; he later moved to Los Angeles.Geraghty was featured
in a small role in the crime drama The Sopranos. Feature roles soon
followed, in such pictures as Jarhead, Bobby, The Guardian, We Are
Marshall, and The Hurt Locker. He also appeared in the January 6,
2010, episode of Law & Order: Special Victims Unit, "Quickie", as a
man intentionally infecting women with HIV. In 2013, he portrayed
Agent Knox on the HBO crime drama series Boardwalk Empire. In August
2014, Geraghty was cast as a series regular on the second season of
the NBC procedural Chicago P.D., playing Sean Roman. In 2018, Geraghty
starred in the TNT drama The Alienist, as NYPD Police Commissioner
Theodore Roosevelt.In his free time, Geraghty enjoys surfing.
for his roles in the 2005 film Jarhead, the 2008 film The Hurt Locker,
and in the 2012 film Flight, along with his recurring role in the HBO
drama series Boardwalk Empire. He appeared as a regular on NBC's
Chicago P.D. from 2014 to 2016.Geraghty was born in Toms River, New
Jersey, and is of Irish descent. He graduated from Toms River High
School East in 1993 and then studied acting at the Neighborhood
Playhouse School of Theatre before beginning his professional career
in New York City; he later moved to Los Angeles.Geraghty was featured
in a small role in the crime drama The Sopranos. Feature roles soon
followed, in such pictures as Jarhead, Bobby, The Guardian, We Are
Marshall, and The Hurt Locker. He also appeared in the January 6,
2010, episode of Law & Order: Special Victims Unit, "Quickie", as a
man intentionally infecting women with HIV. In 2013, he portrayed
Agent Knox on the HBO crime drama series Boardwalk Empire. In August
2014, Geraghty was cast as a series regular on the second season of
the NBC procedural Chicago P.D., playing Sean Roman. In 2018, Geraghty
starred in the TNT drama The Alienist, as NYPD Police Commissioner
Theodore Roosevelt.In his free time, Geraghty enjoys surfing.
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