S04E01: A Dark Knight: Pax Penguina

Gordon fears Jonathan Crane is still alive and back in Gotham, when The Scarecrow's signature MO is used in a series of robberies. Meanwhile, Penguin's "licensing" of crime in the city backfires during the grand opening of his new Iceberg Lounge. Also, in the aftermath of his encounter with Ra's Al Ghul, Bruce begins his vigilante watch.