The third Joona Linna thriller is filled with twists, turns, and a ghost from the past. One of the most talked-about internationally bestselling crime series to come out of Sweden.      Masquerading as a medium, Flora Hansen makes her money claiming she can commune with dead spirits. But after a gruesome murder at a rural home for wayward girls, Hansen begins to suffer visions that are all too real. One of the girls is missing, the walls of her room and her bed spattered with