After Downton is turned into a convalescent home for wounded officers, Matthew brings a general to visit, but Branson has a surprise in store. And is Lavinia hiding something?

Tensions flare between Isobel and Cora. Ethel’s flirtation with Major Bryant lands her in hot water. There is worrying news about Matthew. Branson declares his feelings for Sybil.

Robert receives some shocking news from the front. Daisy’s relationship with William moves faster than she would like. Vera threatens to expose old secrets.

The trio arrive at a hotel where the layout of the rooms keeps changing. It also contains rooms that hold the greatest fears of each visitor.