The wedding ceremony between Kate and Marak is performed, during which it is revealed that Kate is part elf. Elves are thought to be extinct and the addition of elven blood into the King's line is greatly celebrated. Amid the many parts of the wedding ceremony which makes Kate the King's Wife, she is given The King's Wife's Charm, a magical charm which will protect her. When the King's Wife is not in danger the charm appears to be a tattoo of a golden snake which wraps around Kate's neck and down her arm. Kate and Emily adjust to their new home and find happiness there. After some time has passed, trouble strikes the Hollow Kingdom when a goblin is kidnapped. This is followed by a sickness which attacks several of the remaining goblins, one by one putting them into a living sleep. Kate must leave the kingdom and find a way to save them. She awakens the King's Wife's Charm, names her simply Charm, and working with Charm, go to London where they confront the sorcerer who had used the goblin he kidnapped to steal the spirits of other goblins. They defeat him and rescue the goblins. Kate also finds a human baby the magician had in a cage. She takes the baby and Charm names her Matilda (Til) after one of her favorite Kings' Wives. The book ends with Kate giving birth to her son and the next goblin king, Catspaw. As is normal for King's Wives, Kate begins to sob at the first sight of her son, because he has the forearm of a lion.