Dr. Martel arranges hospitalisation for frail old Mrs. Bree who, with her son Edward, are rent-free tenants of Peter. However, they have had to move to an inadequately heated cottage after the Germans commandeered the farmhouse in which they used to live as a billet. In fact, the Germans want to demolish the cottage to make way for an arms dump and trick Peter into cleaning up a cesspool on his land in exchange for letting the Brees return to the farmhouse. However, after Mrs. Bree dies, they charge Edward with stealing coal to keep the cottage warm and send him to prison.
—don @ minifie-1