Mark O'Brien: Mark O'Brien. Actor: Ready or Not. Mark O'Brien is an award-winning actor and filmmaker. He is an English major with a Bachelor of Arts from Memorial University of Newfoundland. His mother was a nurse and his father a truck driver. Mark also has three older sisters. He married actress Georgina Reilly on January 6, 2013 after meeting on the set of the hit show Republic of Doyle.
Known For: Ready or Not (Alex), Arrival (Captain Marks), City on a Hill (Jimmy Ryan), Halt and Catch Fire (Tom Rendon)