Meet Concordia Leveche, gifted psychic, student of the supernatural, and Ghost's link to her origin and her true nature. Elisa Cameron has a million questions, but they'll have to wait until she can take care of a more pressing problem: Dr. Trouvaille is back, and this time he has an army of Ghosthunters with him . . . not to mention a captive by the name of Margo Cameron -- Ghost's sister!