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Mark O'Brien

Mark O'Brien

Mark O'Brien (born May 7, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle and Tom Rendon in Halt and Catch Fire.

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Movies Starring Mark O'Brien (27)

Shadow of God (2025)

While performing an unauthorized exorcism on his father, an elite exorcist suspects the entity he's doing battle with might be a holy being – perhaps even God. ...

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Seven Veils (2025)

Jeanine, an earnest theatre director, has been given the task of remounting her former mentor's most famous work, the opera Salome. Haunted by dark and disturbing memories from her past, she allows her repressed trauma to color the present as she re-enters ...

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Blue Bayou (2021)

As a Korean-American man raised in the Louisiana bayou works hard to make a life for his family, he must confront the ghosts of his past as he discovers that he could be deported from the only country he has ever called home. ...

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The Righteous (2021)

A burdened man feels the wrath of a vengeful God after he and his wife are visited by a mysterious stranger. ...

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Hammer (2019)

A father faces a personal crisis when he discovers his estranged son fleeing a botched drug deal. The two men embark on a violent odyssey that grapples with themes of fatherhood, family and fate. ...

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Marriage Story (2019)

A stage director and an actress struggle through a grueling, coast-to-coast divorce that pushes them to their personal extremes. ...

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Ready or Not (2019)

A young bride's wedding night turns into her worst nightmare when her ridiculously rich in-laws force her to play a gruesome game of hide-in-seek. ...

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Goalie (2019)

The life of a professional hockey player was not always a glamorous one. For legendary goaltender Terry Sawchuk, each save means one more gash to his unmasked face and one more drink to numb the pain. Sawchuk traveled across the country racking up 103 shut ...

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State Like Sleep (2019)

Following the death of her husband, Katherine travels to Brussels, where a few loose ends become a whole web of secrets as she untangles her late spouse's mysterious last days alive. ...

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The Front Runner (2018)

Gary Hart, former Senator of Colorado, becomes the front-runner for the Democratic presidential nomination in 1987. Hart's intelligence, charisma and idealism makes him popular with young voters, leaving him with a seemingly clear path to the White House. ...

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Bad Times at the El Royale (2018)

Lake Tahoe, 1969. Seven strangers, each one with a secret to bury, meet at El Royale, a decadent motel with a dark past. In the course of a fateful night, everyone will have one last shot at redemption. ...

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Kin (2018)

A young boy finds a powerful otherworldly weapon, which he uses to save his older adoptive brother from a crew of thugs. Before long, the two of them are also pursued by federal agents and mysterious mercenaries aiming to reclaim their asset. ...

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The Darkest Minds (2018)

After a disease kills 98% of America's children, the surviving 2% develop superpowers and are placed in internment camps. A 16-year-old girl escapes her camp and joins a group of other teens on the run from the government. ...

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How It Ends (2018)

A desperate father tries to return home to his pregnant wife after a mysterious apocalyptic event turns everything to chaos. ...

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Anon (2018)

Set in a near-future world where there is no privacy, ignorance or anonymity, our private memories are recorded and crime almost ceases to exist. In trying to solve a series of unsolved murders, Sal Frieland stumbles onto a young woman who appears to have ...

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Parallel (2018)

A group of friends stumble upon a mirror that serves as a portal to a "multiverse", but soon discover that importing knowledge from the other side in order to better their lives brings increasingly dangerous consequences. ...

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Arrival (2016)

Taking place after alien crafts land around the world, an expert linguist is recruited by the military to determine whether they come in peace or are a threat. ...

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The Dark Stranger (2016)

Haunted by a terrifying spirit out of her graphic novel, a young artist struggles to overcome her psychosis before it destroys her. ...

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How to Plan an Orgy in a Small Town (2015)

In high school Cassie Cranston was slut-shamed out of the wholesome and repressed town of Beaver's Ridge following a humiliating attempt at losing her virginity. Now, years later, a big city sex columnist, Cassie returns home to bury her mother and finds a ...

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End of Days, Inc. (2015)

A group of laid-off workers bribed into working one last night discover that processing the last of their "inventory" will lead to cataclysmic consequences. ...

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Beat Down (2012)

Beat Down is an irreverent comedy about wrestling, family and following your dreams no matter how painful that can sometimes be. Fran Whiteway (Marthe Bernard, Republic of Doyle) is eighteen and a real firecracker. More than anything, Fran dreams of becom ...

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Snarbuckled (2010)

An itinerant cook survives a shipwreck, paddles himself to an island in a stock pot, and finds himself on a surreal journey through his past to discover the ineffable connection he has with a clown living a desultory existence in a dilapidated lighthouse. ...

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Grown Up Movie Star (2009)

The story of Ruby, 13, determined to grow up fast after her mother runs away to become a movie star, leaving Ruby with her hopelessly rural father. ...

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Cut from the Same Cloth (2009)

In discovering the secret past of an old St. John's neighborhood, a family learns that love can lead down an uncharted road that is best followed with the heart. ...

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Heartless Disappearance Into Labrador Seas (2008)

When a marriage is threatened by a long excursion for work, domestic trouble is buffeted by family and friends. ...

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The One That Got Away (2008)

Joanna, recently divorced, decided to return with her daughter to the town where she was born. There, she confronts the memories of the past when he meets his former lover, now married. ...

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The Four Horsemen (2008)

Four high school football stars enlist in the Marines and head off to fight in the war in Iraq. When one of them is killed and another wounded, they return home only to find is extremely difficult to pick up the threads of their old lives. The memories of ...

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Movies Made By Mark O'Brien (4)

The Righteous (2021)

A burdened man feels the wrath of a vengeful God after he and his wife are visited by a mysterious stranger. ...

Watch Now

Goalie (2019)

The life of a professional hockey player was not always a glamorous one. For legendary goaltender Terry Sawchuk, each save means one more gash to his unmasked face and one more drink to numb the pain. Sawchuk traveled across the country racking up 103 shut ...

Watch Now

Wanderer (2016)

A conversation over dinner, between a married couple and a weary traveller, leads to unexpected revelations ...

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Kathy (2011)

Kathy is a portrait of the most fascinating creature of all: the adult in training, the object of everyone's first affection, the teenage girl. ...

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