Nightwing: Shadow of the Bat

Read Nightwing: Shadow of the Bat Storyline:

Former Robin and current Nightwing, Dick Grayson, must defeat the villains set loose on Gotham City, but this time, Batman's not around to help him...After the events of "Batman: Arkham Knight," the Batman has died, and the villains that he had captured have escaped. With Robin incapacitated, Gordon unavailable, and Oracle recovering from her kidnapping, it's up to Nightwing to defeat the villains and save Gotham. Spoilers from "Batman: Arkham Knight" ahead.