Batman Superman #12 Card Stock Mark Brooks Variant Edition

"Batman and Superman are missing! Is there more to their disappearance than meets the eye? As the heroes of Gotham City and Metropolis try to put the pieces together, they uncover a weirdly chaotic plot devised by Brainiac! What deranged mind could have corrupted the most dangerous computer in the known galaxy? We sure hope it wasn’t The Joker... "