Mark O'Brien (born May 7th, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle (2010) and Tom Rendon in Halt and Catch Fire (2014).
Seven Veils
The Four Horsemen
Grown Up Movie Star
Cut from the Same Cloth
Heartless Disappearance Into Labrador Seas
Shadow of God
Snarbuckled
The Dark Stranger
