Tillys decision to visit London has dire consequences for her business and marriage. With Tilly in London, Kate moves to seize control of the drug trade. Fresh from prison, Guido is determined to become the Al Capone of Australia; and the police suspect they have a traitor in their ranks.
Birgitte Nyborg is about to negotiate the environmental element of the new reform package, but she must face the reality of parties unwilling to compromise. Kasper convinces her that underhanded tactics can help win her a majority for the reform. Meanwhile, Katrine receives an unusual job offer that tests her personal beliefs. And at home, Birgitte's children are clearly affected by their mother's stress; Laura in particular.
Dermot returns with the results of this week's public vote. The two acts with the lowest amount of votes perform again before the judges decide who to send home.
Harry has been arrested on suspicion of the death of the CIA's deputy director, but the officers of Section D break him out of custody. Elena Gavrik informs Harry of a plot to attack the UK.
An injured Canadian officer arrives Downton to recuperate and everything ends up becoming unsettles. He ends up sharing his secret with Lady Edith. Robert announces that the ceasefire will start on the 11th November. Isobel wants Downton to continue to help the war's wounded but Cora has other plans.
