Story by Paul Dini Breakdowns by Keith Giffen 39 script by Sean McKeever; art by J. Calafiore 38 script by Jimmy Palmiotti & Justin Gray; art by Jesus Saiz 37 script by Adam Beechen; art by David Lopez 36 script by Tony Bedard; art by J. Calafiore 35 script by Sean McKeever; art by Manuel Garcia; Covers 39-36 by Shane Davis & Matt Banning; Cover 35 by J.G. Jones 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)!