John Mahon graduated from the University of Scranton with a degree in
classical languages and worked in chemical engineering before turning to
theater.
Appearances as an actor include the New York Shakespeare Festival production
of Arturo Vi and Subject to Fits. He was nominated best actor
by the New York Drama Critics for his work in Nobody Hears a Broken
Drum. He appeared on Broadway with Al Pacino in Richard III
and toured opposite Tammy Grimes in The Prime of Miss Jean Brodie.
He has also directed productions of Camelot, Hair, and
Who's Afraid of Virginia Wolf. He won a directing award for That
Championship Season starring Broderick Crawford. TV appearances include
Hunter, Hooperman, M.A.S.H. and Amen. His films
include Nikita, The Exorcist, and Bad Influence.