Joker/Harley: Criminal Sanity (2019-2021) #5

Dr. Harley Quinn has confronted horrific crime scenes created by a serial murderer who treats his work as high art. But when she is confronted by the killer himself, her life takes a drastic turn. Will she be able to return to the status quo, and simply help the GCPD to catch this killer? Or will the encounter change her forever?