"Batman's team of vigilantes has ghosts in their pasts. And now they have come to roost. When Batman formed a team of fellow vigilantes to help him combat evil in Gotham City, he did it partially to protect his allies from the enemies targeting them. But being on a team makes for more targets, and sometimes the ghosts of your past can become everyone's problem. Azrael was raised to be the perfect assassin by the mysterious Order of St. Dumas...before...

"After years of housing Gotham City's most dangerous enemies, Arkham Asylum developed a bad reputation as the place where legions of deranged costumed predators sharpened their sinister skills. The building was destroyed, but fear of the institution remains high as a new Arkham Tower is under construction. When the Dark Knight himself is afraid, what hope exists for the citizens of Gotham City?"--Back cover.