An outburst threatens Bertie and Edith's relationship, while Mary makes a decision over her feelings for Henry.
Violet attempts to bring the Minister of Health into the hospital dispute, but his visit is overshadowed by a sudden medical emergency.
The family open the house up to the public to raise money for charity, inadvertently exposing how little of its history some of its residents know.
Daisy and Molesley sit their exams, Mary receives a surprising invitation and the family witness a tragedy at the racetrack.
