Problems begin when a young woman, Millie Cairns, gets chicken pox. Dr. Cameron is sure she had it as a child and can't help but wonder if something odd is going on. While not unheard of, getting chicken pox a second time is not a common occurrence. Cameron visits the mother and gets the truth out of her: Millie is not her real daughter, who died soon after she and her husband left Tannochbrae many years before.
