It's the sensational debut of a massive team-up series in which Harley meets (and almost certainly annoys) the greatest heroes and villains of the DC Universe! Harley is pairing up with the greatest heroes of all time, featuring adventures with Wonder Woman, Green Lantern, and more! But can she keep up with superheroes of this caliber? Celebrated Harley co-writers Amanda Conner and Jimmy Palmiotti take on this monumental series, spinning off of the best-selling HARLEY QUINN series. Collects HARLEY'S LITTLE BLACK BOOK #1-6.