Home People David Monahan David Monahan shows David Monahan shows David Monahan TV Shows (17) Liv and Maddie (2013) He was 41 years old The Client List (2012) As Professor Horine, He was 40 years old Rizzoli & Isles (2010) As Tom Payson, He was 38 years old NCIS: Los Angeles (2009) He was 38 years old The Mentalist (2008) As George Doverton, He was 37 years old Privileged (2008) He was 37 years old Swingtown (2008) He was 36 years old Criminal Minds (2005) As Deacon Rogers, He was 34 years old Supernatural (2005) As Father Thomas Gregory, He was 34 years old Bones (2005) As Kurt Delson, He was 34 years old House (2004) As Jay, He was 33 years old Cold Case (2003) He was 32 years old NCIS (2003) He was 32 years old Crossing Jordan (2001) As Matt Seely, He was 30 years old Angel (1999) As Garrett, He was 28 years old Dawson's Creek (1998) As Tobey Barret, He was 26 years old Sabrina, the Teenage Witch (1996) As Aaron's Friend, He was 25 years old
