Martian Manhunter (1998-) #13

Part 1 of the 4-part "Rings of Saturn"! After suffering colossal injuries at the hands of Malefic and during the "Day of Judgement," J'onn has returned to Mars in an attempt to heal himself. But while he's away, Saturnian ships arrive to reclaim Jemm, Son of Saturn, who is still recovering from being used as a pawn. What the Saturnians find troubles them deeply, and only the Martian Manhunter may be able to stop an interplanetary war...if he returns to Earth in time!