"Based on the comic book by Paul Dini and Bruce Timm ; Harley Quinn created by Paul Dini and Bruce Timm".
"A Batman novel".
Summary
Harleen Quinzel witnesses her father being beat up by thugs when she is seven years old. Years later she is able to put her past behind her and pursues a career in psychiatry. Assigned to Arkham Hospital, she will discover The Joker and begin her own metamorphosis into supervillain Harley Quinn.