Acting
Don O. Knowlton is known for Monsters (2022), Mindhunter (2017) and Criminal Minds (2005)
TVMonsters: The Lyle and Erik Menendez Story
2024
as Dan Stanton
TVStuck in Development
2022
as Tim Tuck
TVAmerican Auto
2021
as Hedge Fund Guy
MovieDent
2020
TVMINDHUNTER
2017
as Father Monaghan
MovieTo the Bone
2017
as Jack
TVGigantic
2010
as Charlie Maddock
MovieBrutal
2007
as Doc McCall
MovieBlackwater Valley Exorcism
2006
as McCall
MovieSay I Do
2003
as The Best Man
