When Edward was a child, the Eighth Doctor had visited the court of his father, Æthelred the Unready, and cured Æthelred of a heavy fever. Edward was greatly impressed and indebted to the Doctor. In 1055, Bishop Leofric of Exeter presented the King and Queen with exquisitely crafted necklaces, made of a new metal that was warm to the touch. The Doctor arrived shortly afterward, to Edward's pleasure... and Edith's chagrin. The Doctor's interest (and Edith's suspicions) made the two of them contrive a ruse to get Leofric to expose his plan: kill the King and Queen with necklaces made of plutonium, and assault the castle with tons of the stuff in an attempt to summon the Nimon to Earth. With the Doctor's help, they defended the castle from attack, and disposed of the plutonium. The Doctor gav