Episode 4

Ross is given hope for the Despards' return to Honduras but finds his new nemesis Ralph Hanson has returned to Truro. Demelza continues to help the community help itself, and Dwight gains unexpected patients but his absences from home have unforeseen consequences. Morwenna, still struggling with the loss of her son, starts to secretly slip away from the village, leaving Drake to wonder where she goes.

Sam and Rosina become close as Rosina starts to lend a hand with the school, Geoffrey Charles and Cecily continue meeting in secret but discovering the nature of Ralph and Cary's business plan leaves them in turmoil. Meanwhile, Ralph enlists some help from Tess, and disgruntled locals to set a plot in motion to undo the Despards and the Poldarks in turn.