I just noticed that last month’s hardcover release of Gotham Central: On the Freak Beat includes the “Keystone Kops” storyline. When a fellow police officer is exposed to a mad scientist’s death trap and starts mutating, Gotham detectives Renee Montoya and Crispus Allen travel to Keystone City to consult the imprisoned Dr. Alchemy.

The hardcover line is following a different breakdown than the original trade paperbacks did. The story was previously collected in the paperback Gotham Central: The Quick and the Dead.