A phone call from an old friend sets immortal book dealer Giovanni Vecchio back on the path of a mysterious manuscript he's hunted for over five hundred years. He never expected a young student librarian could be the key to unlock its secrets, nor could he have predicted the danger she would attract. Now he and Beatrice De Novo follow a twisted maze that leads from the archives of a university library, though the fires of Renaissance Florence, and toward a confrontation hundreds of years in the making.A HIDDEN FIRE is the first book in the Elemental Mysteries series by ten-time USA Today bestselling author, Elizabeth Hunter.