Sean Grennan
Biography
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. He went on to debut five shows at the American Heartland Theatre in Kansas City –his comedies Beer for Breakfast and As Long As We Both Shall Live and his musicals (librettist/lyricist) Married Alive!, A Dog’s Life, and Another Night Before Christmas. In addition, Sean has had four world premieres at Peninsula Players Theatre in Wisconsin — Making God Laugh, The Tin Woman, Now and Then and A Rock Sails By. The last of which was part of the statewide festival, “World Premiere Wisconsin”. His play LUCK! won an honorable mention from the National Writers Association’s Playwrighting Festival and was produced by the Epic Theatre Company. His plays and musicals have gone on to hundreds of productions around the world, including China, England, Australia, Germany, Serbia, Russia, Ireland, Italy, and others. Sean has been the Playwright in Residence at Centre Stage’s New Play Festival in South Carolina, the Playwright in Residence at Lamb Arts Regional Theatre in Iowa and twice served as an adjudicator for the Midwest Dramatists Conference. Longtime Chicago and New York City residents, Sean and his wife Kathy moved full time to Pennsylvania in ’22 when Kathy completed a 13-year run in Broadway’s “Wicked.” In PA, they share a lovely home, canoe, and golf cart, as well as sweet memories of Sean’s recently passed on writing partner, excellent dog Hank. His musical “Phantom of the Country Opera” has been published by MTI, and his other plays/musicals have been published by Playscripts, Inc. and Broadway Licensing. Sean is a proud member of Actors’ Equity Association, SAG/AFTRA and The Dramatists Guild.
Known For

TV
Law & Order: Special Victims Unit
Wilkins
1999

TV
Law & Order: Criminal Intent
IAB Detective Roland
2001

TV
MINDHUNTER
Ken
2017

TV
Early Edition
Patrol Officer
1996

TV
The Untouchables
Prosik
1993

Film
The Untouchables
Cop Cousin
1987

Film
Rudy
High School Assistant Coach
1993

Film
Interviews With Interviewers… About Interviewing
Self
1985
Filmography
2017TVMINDHUNTERas Ken2001TVLaw & Order: Criminal Intentas IAB Detective Roland1999TVLaw & Order: Special Victims Unitas Wilkins1996TVEarly Editionas Patrol Officer1993FilmRudyas High School Assistant Coach1993TVThe Untouchablesas Prosik1987FilmThe Untouchablesas Cop Cousin1985FilmInterviews With Interviewers… About Interviewingas Self