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).
All unemployed, Brian Shell and his family take peculiar interest in the wealthy and glamorous Fosters, as they ingratiate themselves into their lives and get entangled in an unexpected incident.
