Acting

Sean Grennan

Place of birth

Chicago, Illinois, U.S.

Known for

Acting

Credits

8 titles

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…

Known for

Law & Order: Special Victims Unit poster
8.0

In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.

Law & Order: Special Victims Unit

1999

MINDHUNTER poster
8.1

An agent in the FBI's Elite Serial Crime Unit develops profiling techniques as he pursues notorious serial killers and rapists.

MINDHUNTER

2017

Law & Order: Criminal Intent poster
7.6

The third installment of the “Law & Order” franchise takes viewers deep into the minds of its criminals while following the intense psychological approaches the Major Case Squad uses to solve its crimes.

Law & Order: Criminal Intent

2001

Early Edition poster
7.4

Gary Hobson thinks he may even be losing his mind when tomorrow's newspaper mysteriously arrives today giving him a disconcerting look into the future. What will he do with tomorrow's news?

Early Edition

1996

The Untouchables poster
7.8

Elliot Ness, an ambitious prohibition agent, is determined to take down Al Capone. In order to achieve this goal, he forms a group given the nickname “The Untouchables”.

The Untouchables

1987

The Untouchables poster
7.5

The Untouchables is an American crime drama series that aired for two seasons in syndication, from January 1993 to May 1994. The series portrayed work of the real life Untouchables federal investigative squad in Prohibition-era Chicago and its efforts against Al Capone's attempts to profit from the market in bootleg liquor. The series features Tom Amandes as Eliot Ness and William Forsythe as Al Capone, and was based on the 1959 series and 1987 film of the same name.

The Untouchables

1993

Film credits

Series credits