Martian Manhunter (2018) #5 (VARIANT)

J'onn J'onnz is no longer the sole survivor of the planet Mars! The vicious criminal Charnn somehow survived the epidemic of H'ronnmeer's Curse-and now he's here on Earth! To survive his attack, J'onn will need Diane's help-but even after he told her everything, what secrets is she hiding?