Mark Costello
Acted in
Charles Sloan
2023
as Charles Sloan
The Fireplace
2022
as Sheriff
Yes, God, Yes
2020
as Priest
Our Friend
2019
as Richard
Doobious Sources
2017
as Blake Morgan
Dead Silent
2016
as Will Hilton
Femme Fatales
2011
as Detective Mitchum
Turbulent Skies
2010
as Gardner
Locusts
2005
as Director Rusk
The West Wing
1999
as Guest
7th Heaven
1996
as Ken
JAG
1995
as Otis Flannik
JAG
1995
as Wallace
JAG
1995
as Commander Onclay
ER
1994
as Kevin Halloran
Reasonable Doubts
1991
as Hanratty
Tribes
1990
as Carl
Full House
1987
as Anchorman
U.S. Marshals: Waco & Rhinehart
1987
as FBI Agent #1
MacGyver
1985
as Cop
Crazy like a Fox
1984
as Nolan
Murder, She Wrote
1984
as Guard
Murder, She Wrote
1984
as Sgt. O'Connor
Murder, She Wrote
1984
as Officer
Hollywood Hot Tubs
1984
as Mr. Slate
Hot Dog... The Movie
1984
as Event Starter
Knots Landing
1979