Following the altercation, relations between Robert and Cora are strained, while Blake's scheming starts to come to fruition when Mary is unexpectedly pitted against her love rival. Edith decides to take drastic measures after receiving terrible news, leaving various parties reeling. Baxter is embroiled in the investigation into Green's death following a mysterious tip-off, and as Thomas's health deteriorates, he finally reveals the truth to the maid. Elsewhere, love is in the air for more than one member of the Crawley family.

Preparations are under way for Rose's wedding, but family tensions on both sides threaten to derail proceedings. Edith's arrangement with Marigold is happily working out, but how long can she and Cora conceal the truth from Robert? Denker reveals an unexpected side to her personality, which causes trouble for more than one of the servants. With the war memorial due to be unveiled, Mrs Patmore is still upset, but Robert has something up his sleeve. Branson comes to a heart-wrenching decision, and the storm clouds that have been gathering over Anna and Bates finally burst.