Riddle me this: What good is an enigma if it can be solved? The Riddler, the Dark Knight's foe who never showed his face in Batman: Arkham Asylum, is upping his game this fall. His previous tactic of verbally assaulting Batman didn't come to much good in Arkham Asylum and like any worthy criminal, Riddler knows he has to escalate matters. He's raising the stakes in Arkham City and posing a physical threat not only to Batman, but to innocent civilians...