Actor | Producer
John Patrick Mahon (February 2, 1938 - May 3, 2020) was an American film, stage and television actor. He was known f...
The People Under the Stairs
... 1991
The Exorcist
... 1973
Zodiac
... 2007
Armageddon
... 1998
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).
Call Mom!
... 2019
Star Wars: Episode IV - A New Hope
... 1977
Before I Go to Sleep
... 2014
Johnny English Reborn
... 2011
Spellbound
... 2023
A Friend's Wife Sold in Debt
... 2022
The Lift
... 1983
The Chalk Line
... 2022
The Ultimate Gift
... 2007