Grace Hunter has to step in and hurriedly research an ancient text when the university professor who was supposed to becomes unable to perform the task. This valuable text was discovered in a castle on an Italian island that to Grace's eyes is more like a fortress keeping people away. The owner of the castle is Count Alessandro Volta. A former pianist, his face was damaged in a tragic accident ten years ago, and ever since the count has secluded himself in the castle that has been in his family for generations. When he lays his eyes on Grace, he angrily blurts out, "I didn't invite any prostitutes here. Leave at once!"