Minister of Health Neville Chamberlain visits Downton for dinner, and is drawn into Violet's plan to save the hospital, with distressing consequences for everyone. Andy finds an unexpected confidante while helping Mr Mason move into Yew Tree Farm, Mary is uncertain if she has met her match, Edith meets Bertie Pelham in London, and Spratt comes to Denker's aid. Mrs Hughes struggles to keep Carson happy, while Mary thinks secrets are being kept from her.