Arkham Asylum may have been decimated during A-DAY, but its legacy lives on. Bloody, broken, and beaten…but Batman has a mission.When the terrorist organization known as THE RED CROWN took control of Mayor Nakano's personal security detail, only the Batman could protect Gotham's highest-ranking city official from certain death! But when the pair is thrust into the sewers below, a much more sinister threat lurks in the darkness. Better look sharp, Batman, because a hundred thousand eggs with a hundred thousand little monsters inside are about to hatch…and they look HUNGRY… And outside of the sewers, the city streets being overtaken by larger, (somehow even more) horrific creatures! Collects Detective Comics #1044-1046; Detective Comics 2021 Annual #1.

Mariko Tamaki is a Canadian writer living in Oakland. Works include New York Times bestseller This One Summer and Skim with Jillian Tamaki, Emiko Superstar with Steve Rolston, and the YA novel (You) Set Me on Fire. This One Summer was the winner of Printz and Caldecott Honors in 2015 and received the Eisner Award for Best Graphic Album (New). Matthew Rosenberg is an American writer of comic books including We Can Never Go Home, 4 Kids Walk into a Bank, and Twelve Reasons To Die for Black Mask Studios, Punisher, New Mutants, Phoenix Resurrection, Tales of Suspense, Kingpin, Rocket Raccoon, Secret Warriors, and Edge of Venomverse for Marvel, and Archie Meets Ramones and The Archies for Archie.