The Poldarks learn that their friend Dr Enys needs immediate care, suffering distress following his internment in France. In reaction to Ross' rescue of Hugh Armitage, George desperately needs to secure a connection to the nobility and so plans to force Morwenna's marriage to Osborne. Geoffrey Charles gives Drake his bible as a gift and naively reveals that Morwenna is to be wed. Drake confronts Morwenna and she agrees to marry him instead. Morwenna returns to Trenwith to tell George and Elizabeth that she will refuse Ossie's offer of marriage. Out of spite, George has Drake arrested for the theft of Geoffrey Charles' valuable bible, a crime for which Drake will hang.

Ross is adamant George will lose in the election and determines to get a headstone made for Agatha's grave, something Trenwith has neglected.

George, meanwhile, questions Dwight over Valentine's legitimacy and - paranoid and jealous - shuts himself to Elizabeth, as Rowella begins to seduce Osborne Whitworth and Demelza receives tokens of Hugh's affection.

Sam continues to pine after Emma, as Dwight instructs Osborne to forego intercourse with Morwenna and Cary informs Lord Falmouth that the Warleggans will be opposing Falmouth in the election.

Ross returns from his mine to discover Hugh Armitage at Nampara with Demelza - and this time Hugh's attention does not go unnoticed...