Sean Grennan
Actor
Chicago, Illinois, U.S.
Active 1987–present
An actor for many years, Sean began writing for the theatre as co-librettist for the musical Phantom of the Country Opera, which had its world premiere at the Marriott Theatre in Lincolnshire, Illinois.
Filmography
MINDHUNTER (2017) - KenLaw & Order: Criminal Intent (2001) - IAB Detective RolandLaw & Order: Special Victims Unit (1999) - WilkinsEarly Edition (1996) - Patrol OfficerRudy (1993) - High School Assistant CoachThe Untouchables (1993) - ProsikThe Untouchables (1987) - Cop Cousin