Dr. Harleen Quinzel has a theory: mental illness is a survival mechanism. As she seeks to help the broken souls of Gotham City piece together their sanity she will become the one thing she fears the most: one of them. A bold new retelling of the tragic origin of Harley Quinn told through the eyes of the only person who knows her better than anyone: Harleen. It's been months since Harleen began interviewing criminals at Arkham Asylum, and she's having strange dreams about one of them in particular: The Joker. What start off as nightmares will soon evolve into fantasies. Despite warnings from the Dark Knight himself, she's utterly fascinated by this man who seems the perfect expression of theory; who says all the things she needs to hear; who seems to know her better than she knows herself.