Acting

John Mahon

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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).

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Horror filmography

The People Under the Stairs 1991

as Police Sergeant

Someone's Watching Me! 1978

as Frimsin

The Exorcist 1973

as Language Lab Director

John Mahon

Horror filmography

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