Paul O'BrienActingPaul O'Brien is an actor.Read full biographyKnown ForLaw & Order: Organized Crime2021Shirley2020The Dangerous Book for Boys2018Search Party2016Manhattan Romance2015OM CITY2015Elementary2012Person of Interest2011Henry's Crime2010Redacted2007Law & Order: Criminal Intent2001What's the Worst That Could Happen?2001Angel1999The Practice1997Star Trek: Voyager1995ER1994Law & Order1990Law & Order1990Law & Order1990Soul Man1986A Case of Deadly Force1986