1st printing. Collects Sherlock Frankenstein and the Legion of Evil (2017 Dark Horse) #1-4 and Black Hammer (2016 Dark Horse) #12.

Written by Jeff Lemire. Art and cover by David Rubin.

This mystery set in the world of superheroes follows a reporter determined to find out what happened to her father: The Black Hammer. All answers seem to lie in Spiral City's infamous insane asylum where some of its dangerous super-villain tenants reside. As she gets closer and closer to the truth she uncovers the dark origin stories of some of Black Hammer's greatest foes and how they tie into the puzzle of what happened to Spiral City's greatest hero. From New York Times bestselling and Eisner-nominated creator Jeff Lemire!