Mark O'Brien
Biography
Life Events
2005
Made screen-debut in the short "Downward Calling"
2010
Played Des Courtney on "Republic of Doyle"
2015
Cast as Tom Rendon on "Halt and Catch Fire"
2016
Appeared in Denis Villeneueve's sci-fi drama "Arrival"
2016
Played Max Miner on "The Last Tycoon"
2018
Appeared in Drew Goddard's '60s-set thriller "Bad Times at the El Royale"
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