The first official trailer of season 4 of House of Cards focusses on the unravelling of Frank (Kevin Spacey) and Claire's (Robin Wright) relationship, hinting at the havoc it might wreak.

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The trailer runs with a very ominous tone as both Frank and Claire seem to crumbling under pressure and are devastated by their seperation. Against the vision, Frank's voiceover spurns as he accuses Claire of sabotaging everything they had built together.

"You have no idea what it means to have nothing, you don't value what we have achieved, I have had to fight for everything my entire life!" he says.

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"I saw a future, out future," Claire is heard saying.

"We had a future until you started destroying it," he responds.

The clip plays up great intrigue as we can't tell if Claire is back with Frank or she is working toward his ruination.

Recently unveiled promo art for season 4 of House of Cards also hinted at the fate of their relationship. The art shows Frank (Kevin Spacey) and Claire (Robin Wright) straight-faced with steely glares, it's a clean poster, but what gives the big hint away is the caption that goes with it: "Without me, you're nothing."

Season 4 of House of Cards is set to return on March 4.

Watch the official trailer: