A secret World War II document opens Elizabeth’s eyes to grim realities about a family member. The Duke of Windsor campaigns to re-enter public life.

A letter from Peter Townsend spurs Margaret to make a bold proposal. Elizabeth has good news that causes complications for Margaret.

As Philip leaves for a long tour, Elizabeth makes an upsetting discovery. Prime Minister Eden wants to strike back after Egypt seizes the Suez Canal.

Palace insiders try to prevent a scandal that could reflect poorly on Philip. Eden faces censure from his cabinet and the press.

In a sun-dappled Sherwood Forest, The Doctor discovers an evil plan from beyond the stars. But with the fate of Nottingham at stake (and possibly Derby), there’s no time for…