Instruct: Classify the given review as either positive or negative.
Query: A possible origin of Batman's greatest enemy is revealed.

This book finally attempts to give a history toone of comicdom's most famous, yet most engimatic, villians. The two parallel plots in the book of the Joker attempting to drive Commisioner Gordon insane in a manner similar to how he had, as displayed in the parallel plot. This book manages to convey a true humanity to this character as a man who had a real life and family and how it utter collapses around him. This culminates in the desperate crime that lead to his chemical scarring that marked his descent into madness. You will be left with a very different impression of the Joker as you finish one of the finest superhero stories ever written.