Mark Costello
Biography
Mark began working professionally in Los Angeles back in 1983, when he booked his first job as the "Starter" in, Hot Dog...the Movie". He continued working numerous Co-Star and Guest spots on episodic TV such as, "Murder She Wrote, "Dynasty," Knots Landing," "Who's the Boss," "LA Law," "Full House", "Seventh Heaven," "ER," "N.Y.P.D. Blue," "The West Wing," and "Criminal Minds." Mark also had recurring roles on such television shows as, "Bay City Blues," "JAG", and "First Monday." In 1990, Mark had a three year contract on the FOX youth oriented drama, "Tribes". Mark was very established in the theatre world in Los Angeles, having won Best Actor in a Feature Role from Stage Scene LA, for his performances in,"Finding Fossils" and "John is a Father" at The Road Theatre, as well as "Mom's Dead", at Sacred Fools. Mark appeared with Susan Sullivan and David Selby in Edward Albee's, "A Delicate Balance," at the Odyssey Theatre , which won the LA Drama Critics Circle McCulloh Award for Best Revival. Mark moved to Atlanta in 2017 and has appeared in the films, "Yes, God, Yes," "Our Friend" and the independent feature film, "Charles Sloan", which he played the title role, and which won For Best Full Length Feature Film at the 2022 Raleigh Film and Arts Festival.
Top Filmography

Full House
1987 // TV

Everybody Hates Chris
2005 // TV

ER
1994 // TV

MacGyver
1985 // TV

Yes, God, Yes
2020 // MOVIE

The West Wing
1999 // TV

Murder, She Wrote
1984 // TV

Murder, She Wrote
1984 // TV

Murder, She Wrote
1984 // TV

JAG
1995 // TV

JAG
1995 // TV

JAG
1995 // TV

Paradise
2025 // TV

Our Friend
2019 // MOVIE

7th Heaven
1996 // TV