Dennis FlanaganActingDennis Flanagan is an actor.Read full biographyKnown ForSnakeeater2024Big Dogs2020Prodigal Son2019FBI2018New Amsterdam2018Ozark2017Blindspot2015Altered Minds2014Chicago P.D.2014Chicago P.D.2014The Blacklist2013Banshee2013Elementary2012Person of Interest2011The Good Wife2009Pray for Morning2006Law & Order: Special Victims Unit1999Charmed1998Law & Order1990