Margaux's father isn't the only one making an appearance on Revenge this season since her brother will also pop up.

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"Margaux's half-brother, the devious and dashing Gideon, makes an appearance in the season three finale," E! Online teased on Friday.

Gideon, who will also return for season 4, will apparently cause a lot of drama when he touches down in the Hamptons.

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"But be warned: he has a dark side," the website also wrote.

Aside from her sibling, Margaux's father will also bring a bit of trouble. Pascal LeMarchal, played by Halle Berry's husband Olivier Martinez, is a "cutthroat businessman" and has had a turbulent history with Conrad (Henry Czerny) and Victoria (Madeleine Stowe).

Years ago, both businessmen apparently tried to pursue Victoria, who was a ballerina at the time. That was also the period when Conrad was married to Stevie and she wasn't happy about her then husband's wandering eye. Conrad later left Stevie for Victoria.

In the upcoming episodes, fans will take a glimpse at the conflicting past and get to see what Conrad was like in his younger years.

Cody Wood, best known for his work in 2012's Looper, is set to take on the role, according to Spoiler TV.

-- Revenge airs on Sundays at 10 p.m. EST on ABC.

Tags: Revenge