The family receive a warm welcome at Duneagle Castle when they visit Rose and her parents in the Highlands. But there is no disguising the tensions between their hosts. Back at Downton, Carson is determined to keep the servants working hard, but with a country fair coming up, will some be tempted to push their luck? Could romance be on the cards for Mrs Patmore? With Hugh Bonneville, Maggie Smith, Lily James, Rob James-Collier, and Jim Carter.