Her name is Dr. Harleen Quinzel—better known to her friends and enemies as Harley Quinn. Her very-very-ex-boyfriend the Joker may be the Clown Prince of Crime, but Harley’s the Queen of Coney Island! So when the zombie apocalypse threatens her li’l seaside stretch of paradise, who else would ya call to give the undead a blow to the head?

Harley Quinn returns to Gotham City after The Joker War and has decided to turn over a new leaf and make up for the sins of her past by becoming its newest protector. Harley Quinn here to let everyone know that I’m starring in a brand-new graphic novel collection here with a brand-new status quo. I'm coming back to Gotham City to make up for the sins of my past, and help the city recover from "The Joker War!" But there's no welcoming committee waiting for me, your favorite Maid of Mischief! And between you and me, some real creeps are working to keep the city broken. We can't let that happen, can we? Rising-star writer Stephanie Phillips, my new partner in crime, takes me into a bold new era with her partner in artistic crime Riley Rossmo, who I gotta say designed a real nice new costume for me. You're not gonna wanna miss this one, folks! Collects Batman: Urban Legends #1 and Harley Quinn #1-6!

Harley Quinn's back in Coney Island for a long-overdue reunion with old friends, old haunts, and…an old time machine? Yep, you read that right. A mysterious benefactor has left Harley a time machine. What could go wrong-right? Funny you should ask. Turns out the entire DC Universe-including Wonder Woman, the Flash, Aquaman, Batman, and li'l baby Supes-is thrown into chaos, and not the fun kind. But with every step Harley takes to right various wrongs, she creates another reality in the Multiverse…ones where things still suck. Worse, Starro has assembled a Suicide Squad of his own to conquer this new set of realities. With a time machine and a tough, scary, alternate-universe Harley at her side, maybe-just maybe-she can make things right again. And who the heck gave Harley Quinn a time machine in the first place? The answer needs to be seen to be believed! Harley's timehopping, universe-screw-upping adventure cannot be missed! Collects Multiversity: Harley Screws Up the DCU #1-6.

Having played out every trick on the fine citizens of Gotham City, Harley Quinn—the Joker's former girlfriend—decides that another city deserves her attention. After all, why menace one city when you can menace two? Especially if the second has a Man of Steel guarding it. Harley hightails it to Metropolis, with allies Poison Ivy and Bizarro in tow. Writer Karl Kesel and artist Terry Dodson continue their now classic run on this beloved title in HARLEY QUINN: WELCOME TO METROPOLIS, collecting issues #14-25.

When last we checked in with Harley Quinn, she ate, she banged, and she killed…but now it's time for something a little different. Fresh out of the events of Harley Quinn: The Animated Series season three, Harley has found herself a part of a highly unlikely team-the Bat-Family! Meanwhile, Poison Ivy has found herself prepping for her new job-leader of the Legion of Doom! But while Harley and Ivy adjust to their respective new roles, a ghost from Ivy’s past enters the fray and threatens the relationship between everyone's favorite clown and plant couple!

Celebrate twenty-five years of Harley Quinn with this collection of stories by some legendary Harley talent and some who've never drawn her before! How does Harley manage her insanely jam-packed life on Coney Island? What haven't we seen from her past with the Joker? And can even Harley's psychological acumen crack the twisted mind of…Robin, the Boy Wonder?

"HARLEY LOVES JOKER" flashback tale that ran as a backup in HARLEY QUINN last year! As far as The Joker's concerned, the new headquarters Harley built for them is absolutely perfect...but only she knows the whole place is rigged to come crashing down around them—and she doesn't know how to stop it!

With just five dollars and a knapsack to her name, 15-year-old Harleen Quinzel is sent to live in Gotham City. She's not worried, though-she's battled a lot of hard situations as a kid, and knows her determination and outspokenness will carry her through life in the most dangerous city in the world. And when Gotham's finest drag queen, Mama, takes her in, it seems like Harley has finally found a place to grow into her most "true true" with new best friend Ivy at Gotham High. But when Mama's drag cabaret becomes the next victim in the wave of gentrification that's taking over the neighborhood, Harley's fortune takes another turn. Now Harleen is mad. In turning her anger into action, she is faced with two choices: join activist Ivy, who's campaigning to make the neighborhood a better place to live, or team up with her anarchist friend Joker, who plans to take down Gotham one corporation at a time. From Eisner Award and Caldecott Honor-winning author Mariko Tamaki (This One Summer) and Eisner Award-nominated artist Steve Pugh comes a coming-of-age story about choices, consequences, and how a weird kid from Gotham goes about defining her world for herself.

In this second HARLEY QUINN collection, Harley gets fed up with crime and decides to switch sides — much to the chagrin of Batman and company. Then, with her gang threatening to mutiny, Harley must whip them into shape while battling Killer Croc. Collects HARLEY QUINN #8-13 and HARLEY QUINN: OUR WORLDS AT WAR #1.