Enemies of Gotham City: Knight on the Town Expansion

From BoardGameGeek:

Gotham City is in turmoil as Batman's fiercest foes fight for supremacy. In the Enemies of Gotham City - Knight on the Town expansion, make your bid for dominion by harnessing the abilities of unique and powerful villains! Place deadly riddles across Gotham City as The Riddler and put the hurt on the other villains as Killer Croc. Single-handedly take on your rivals as one of the two new Lone Villains by unleashing vengeance as The Phantasm or concocting secret formulas as Man-Bat! Enemies of Gotham City Knight on The Town Expansion introduces a new Villain type, Lone Villains! This expansion adds 55 new cards including 4 new Villains: The Riddler, Man-Bat, The Phantasm, and Killer Croc. -description from the publisher