(W) Paul Dini & Various (A) Bruce Timm & Various (CA) Amanda Conner Twenty-five years? Seriously? Okay, yes, it's true: It's been a quarter of a century since Dr. Harleen Quinzel showed up and stole our hearts, our wallets and our dignity. Celebrate 25 years of Harley in this new hardcover that guest stars The Joker, Batman, Poison Ivy and many more!