This month's 3-part crossover with RED ROBIN and GOTHAM SIRENTS reaches its conclusion as Batman becomes Gotham City's last hope! Can he help the city avoid a cleansing scourge? Will the Angels of Death find one good man whose soul is pure? And what is the tragic secret in Dick Grayson's past that might doom Gotham? Guest-starring Red Robin, Catwoman and Ra's al Ghul!