Biography
John Patrick Mahon (February 2, 1938 - May 3, 2020) was an American film, stage and television actor. He was known for Armageddon (1998), L.A. Confidential (1997) and Zodiac (2007).
Acting · 49
A Call to Arms
2009
Zodiac
2007
Zoey 101
2005
Crossing Jordan
2001
The Division
2001
Angel
1999
Armageddon
1998
Just Shoot Me!
1997
Profiler
1996
The Pretender
1996
Arli$$
1996
JAG
1995
Roswell
1994
Frasier
1993
The X-Files
1993
One False Move
1991
Baywatch
1989
The Couch Trip
1988
MacGyver
1985
Crazy like a Fox
1984
Hunter
1984
Manimal
1983
St. Elsewhere
1982
Knight Rider
1982
T. J. Hooker
1982
Knots Landing
1979
A Killing Affair
1977
Police Woman
1974
The Exorcist
1973
Kojak
1973