Acting
Mark O'Brien
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).
Web Series & TV Shows
The Kelly Clarkson Show
as Self
Warehouse 13
as Jerry Hoffler
Hannibal
as Randall Tier
Halt and Catch Fire
as Tom Rendon
Republic of Doyle
as Des Courtney
Killjoys
as Grayson Hicks
Perry Mason
as Thomas Milligan
Your Honor
as Father Jay
City on a Hill
as Jimmy Ryan
61st Street
as Officer Logan
