Joker / Harley: Criminal Sanity #5 (Francesco Mattina Cover)
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?