When her father reappeared in her life, Sandy Bishop was anything but overjoyed. He had shown no intrest in her since her parents' divorce when she was two. Her idea of father has been her mother's second husband--Jim Bishop was the one she called "Dad"--and she had even had her name legally changed. She thought of herself as Sandy Bishop, not Ariadne Fredrick. But the stranger adressed her by that name. And the stranger was her real father, right there in her dormitory room at the college in Florida, standing before her after an absence of almost twenty years.
She knew he was an archaeologist. She even knew that he was scorned by other professionals for his obsession with the Lost Continent of Atlantis. And he told her immediately that he had read an article about her lucky find of a sunken ship while out scuba-diving one day. But none of that prepared her for his startling demand. She must come with him, he said, to the Greek island of Thera. He wanted her to dive for him. And everything must be kept a secret--especially her relationship to him.