Having a Batman: Arkham Knight Riddler guide to refer to is crucial ... use the Remote Hacking Device on it to reveal her Batgirl suit. Scan this to solve the riddle. Solved within the GCPD ...

"The Batman of Arkham Knight is a complex, contradictory figure, a hero with real depth and dimension, and we get to wear the iconic cowl for one last mind-boggling night of mayhem. Miss out on that?

The latest evolution of Batman lore just gave Robin a surprising new costume, bringing him closer to the Dark Knight's own ...