Mark O'Brien Overview

Born in St. John's, Newfoundland, Mark O'Brien is best known for his role as Des Courtney on the hit TV series Republic of Doyle, which ran from 2010 to 2014. More recently, he played Cyrus Frear in the Netflix original film Anon (2018), shot in Toronto and starring Amanda Seyfried and Clive Owen. His career began in 2005 when he played a small role on the series Legends and Lore of the North Atlantic. Roles on a number of series followed, before he made his feature film debut in the Canadian... See All