'House of Cards,' the political drama television series, will return for its Season 4 in 2015, but fans are very eager to see what is in store for the characters in the upcoming installment of the Netflix series.

According to Christian Today, the new Season will introduce a new character, which portaryed by Colm Feore. Deadline reports that the new character will be a high-profile individual and this should be exciting for the fans. What is more, Entertainment Weekly has singled out Neve Campbell as another addition to the casting in Season 4.

Meanwhile, another report hints the idea that a new power couple will also be introduced in the next season, making all the correct ingredients for an explosive Season 4. There are rumors that Campbell will be filling one of the two roles reserved for the new couple that will pose a direct competition to the Underwoods. However, some reports suggest that that both Campbell and Feore will be regulars in Season 4.

On the other hand, Kevin Spacey and Robin Wright would continue to play their roles as Frank and Claire Underwood respectively. In fact, viewers can expect to see more tumult in the relationship of the two leads in the upcoming season, which is likely to pick up from where the Season 3 finale ended.

Beau Willimon, the show runner of 'House of Cards,' shared some details about the upcoming season to The Hollywood Reporter. He talked about the complications in Frank and Claire's partnership, and why the story of the series is tending in this direction.

Willimon said, "A lot of the strength of the show is based on the strength of that marriage. But as soon as we began to explore that, we realized there was no turning back," adding, "We also realized we'd laid the groundwork in the previous two seasons for this conflict between Francis and Claire, and the more we began exploring it, the more inevitable it became. And the more exciting it was for us to travel that emotional terrain."

While this summaries 'House of Cards' Season 4 in a way, but with the introduction of a new power couple, the dynamics of the show is likely to change radically. And the consequences of these changes should make the 'House of Cards' Season 4 more interesting right from the first episode to the last.