City of Souls - Signs of the Zodiac, #4

Book 4 in the NYT & USA Today Bestselling "Signs of the Zodiac" series. In Sin City, a little girl suffers from a mysterious and terrible malady. If she dies, the Light will perish alongside her. Warrior, avenger, superhero, Joanna Archer has survived countless otherworldly horrors, and discovered her rightful role among the agents battling the pervasive evil of Shadow .