Story by Paul Dini; Script by Tony Bedard; Breakdowns by Keith Giffen; Art by J. Calafiore; Cover by Shane Davis & Matt Banning

The action ratchets up across five issues in August guest-starring Zatanna, the Teen Titans, the JLA, Poison Ivy, the Penguin, the Atom and more! Karate Kid ventures to Oracle for answers. Jimmy Olsen attempts to join not one but two exclusive clubs. Mary Marvel falls deeper into temptation. And Donna Troy and Jason Todd journey into the Nanoverse!

Plus, starting in COUNTDOWN 38, a series of backup stories recounting the origins of DC's greatest villians, written by Scott Beatty (BATGIRL: YEAR ONE)!