Joker / Harley: Criminal Sanity -- Secret Files

This 2020 DC one-shot expands the world of Joker/Harley: Criminal Sanity, offering a deeper look at the psychological and procedural underpinnings of that gritty, noir-inspired series. Written by Kami Garcia and Edward Kurz, with art from Cat Staggs, David Mack, and Jason Badower, the Secret Files issue functions as a companion piece, fleshing out the investigative files and character profiles that drive the main story. It’s a dense, atmospheric supplement for readers who want to linger in that universe’s dark, forensics-driven take on Gotham.