When Walker reneges on the deal, saying he wants Underwood to enforce his agenda in Congress, Underwood graciously accepts but seethes in private, plotting revenge.
Frank resigns in disgrace, fully expecting a pardon from Claire as she succeeds him to become the 47th president.
The sixth and final season of House of Cards arrives on Netflix on 2 November, bringing to an end an extraordinary political drama.
President Underwood orchestrates a campaign of fear as the election nears, having Doug instigate a cyberattack to be blamed on ICO.