Justice League Unlimited #20

Danger on the “Power-Planet”! Lex Luthor and the Dark Knight are at the center of the mystery surrounding the return of the Brainiac Queen. A surprising connection between the two men drives a wedge into the Justice League Unlimited. Meanwhile, the mission to escort the JLU's energy stockpile from the Watchtower to Oa goes completely off the rails — and it looks an awful lot like Guy Gardner is to blame. Or didn't you see that coming?

• Featuring Superman, Batman, Wonder Woman, The Flash, Aquaman, Cyborg, and Green Lantern
• Guests and adversaries: Lex Luthor, Brainiac Queen, Guy Gardner
• DC action between Earth, the Watchtower, and Oa