ABC 'Revenge' Season 4 Spoilers: Margaux Actress Karine Vanasse Talks Upcoming Episode You Can't Miss [Watch]

According to "Revenge" actress Karine Vanasse, there's an upcoming episode in Season 4 you don't want to miss.

While on the red carpet for the 2014 International Emmy Awards held at the New York Hilton Hotel in New York City, Vanasse teased what lies ahead for her character, Margaux LeMarchal.

"Oh, there's so much for her," she said in an interview with Latin Post. "It's so dramatic this season for her."

For much of Season 4, Margaux and Daniel Grayson, played by Joshua Bowman, have been getting pretty close.

"I think that so far since the beginning of this season, Margaux and Daniel have been sort of understanding how they can support each other, and really understand that they come from the same place and [how to] be better together," Vanasse explained.

Happiness, however, does not last forever in the cutthroat world of "Revenge," as Margaux is about to find out.

"But something very sad is going to happen in episode 4-10 [Season 4, Episode 10], and it's going to change her trajectory for the rest of the season," Vanasse revealed.

According to TV.com, Season 4, Episode 10 of "Revenge" is titled "Atonement."

"Jack is conflicted between two women: Emily, and a new lady in his life," the site's summary reads. "Meanwhile, Southern flair comes to East Hampton, courtesy of Nolan and Louise."

In the meantime, Vanasse is enjoying her role as teacher Maxim Bouchard in the Canadian telenovela "30 Vies" ("30 Lives" in English), which was nominated for the International Emmy for best telenovela this year.

"The show takes place in high school, and basically it's about one teacher with one of its classes and the story of these students," the Canadian-born actress explained.

Although Brazil's "Precious Pearl" ended up winning over "30 Vies," Vanasse is still has plenty to be proud of.

"I started as a very young actress, and ... the fact that I was now being sort of the mentor to these younger [actors] was something very moving -- just to feel that I'm there now in my career. I'm the one supporting the younger ones," she said.

"Revenge" fans can watch Margaux's life changing moment in "Atonement" on Dec. 7 on ABC.

The next new episode of "Revenge," titled "Intel," airs Nov. 30. Check out a sneak peek below: