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?

In Gotham City, heinous acts of violence occur daily. Harley Quinn, forensic psychiatrist and profiler, consults with the Gotham City Police Department on its worst cases. But one unsolved murder still haunts her-the night Harley discovered her roommate’s body marked with the signature of a notorious serial killer known as The Joker. Five years later, the case remains unsolved, as a new series of horrific killings begins. When the murders escalate and the meticulously constructed crime scenes become more elaborate, Harley’s obsession with finding the depraved psychopath responsible leads her down a dangerous path. The past and the present finally collide, and Harley must decide how far she is willing to go-and how many lines she is willing to cross-to solve these cases once and for all. Written by #1 New York Times and international bestselling author Kami Garcia (Beautiful Creatures, Unbreakable, The X-Files Origins: Agent of Chaos) and drawn by Mico Suayan (Bloodshot Reborn), Jason Badower (Wonder Woman ’77), and Mike Mayhew (The Star Wars), Joker/Harley: Criminal Sanity introduces readers to a Joker and Harley Quinn unlike any they’ve seen before, utilizing forensic psychiatry, behavior analysis, and psychological profiles to create a true-to-life take on these iconic characters that is more terrifying than any psychotic fantasy. Collects Joker/Harley: Criminal Sanity #1-8 and the one-shot Joker/Harley: Criminal Sanity-Secret Files.

Head over heels in her devotion to the Joker, Arkham psychiatrist Harleen Quinzel gave up her career (and her sanity) to transform herself into the ultimate companion for crime's clown prince - the mad moll Harley Quinn. Of course, Harley's romance with the Joker hasn't been easy. The two are at each other throats as often as in each other's arms, and that buzzkill Batman is always sticking his nose in just when things are starting to get fun. But what great love story is without the occasional incarceration and life-threatening peril? The Joker's main squeeze takes center stage in these stories from top creators Paul Dini, Yvel Guichet, Don Dramer, Joe Quinones, Neil Googe and more! Collects stories from: BATMAN: HARLEY QUINN #1, BATMAN: GOTHAM KNIGHTS #14, #30, DETECTIVE COMICS #831, #837, JOKER'S ASYLUM II: HARLEY QUINN #1, BATMAN: BLACK AND WHITE #1, #3, LEGENDS OF THE DARK KNIGHT 100-PAGE SUPER SPECTACULAR #1 and DETECTIVE COMICS #23.2.

It's been months since Dr. Harleen Quinzel began interviewing criminals at Arkham Asylum, and she's having strange dreams about one of them in particular: The Joker. What starts off as nightmares will soon evolve into fantasies. Despite warnings from the Dark Knight himself, she's utterly fascinated by this man who seems the perfect expression of her theory; who says all the things she needs to hear; who seems to know her better than she knows herself. Harleen is a bold new reimagining of the origin of one of DC's most beloved characters, as envisioned by writer/artist Stjepan Sejic. Collects Harleen #1-3.

When a new hospital collapses into a sinkhole in the middle of Gotham City, Harley Quinn tries to convince Huntress and Black Canary to investigate. But can the Birds of Prey really trust the Clown Princess of Crime? Or do Harley's true allegiances lie elsewhere?

Our favorite little troublemaker, Harley Quinn, takes on Comic-Con International: San Diego in this over the top issue. She'll have to battle long lines, crazy crowds and the dreaded con crud, all in the quest to get her own comic book published.

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 a new direction for the series, Harley attempts to juggle being a full-time psychiatrist with her own criminal activities. But the unbalanced people she has to treat are keeping her very busy-and she's wanted for the murder of a police officer. Then, Harley gains powers beyond those of normal humans thanks to Poison Ivy's experiments. But every gift has its price, and now Harley faces the consequences. Plus, Harley signs on for a mercenary gig to hunt down a guy on the lam and retrieve an unnamed object of limitless value for him. Collects HARLEY QUINN #26-38.

Get ready for this summer's most anticipated movie SUICIDE SQUAD with the comics that inspired the film, including fan-favorite character Harley Quinn! Love makes you do crazy things. And Suicide Squad member Harley Quinn is madly in love. After springing her psychotic killer boyfriend, the Joker, from Arkham Asylum, former psychiatrist Harleen Quinzel put on a clown costume and said sayonara to sanity. Now Harley brings her own unique brand of psychosis and revelry to whatever she does, whether it's causing mayhem alongside her beloved Mistah J., saving the world as the nuttiest member of the Suicide Squad, or relaxing with her gal pals Poison Ivy and Catwoman. With her deranged mix of fear and fun, she knows how to leave a crowd in stiches! HARLEY QUINN'S GREATEST HITS collects eight of the lovesick lunatic's best stories from such talented writers and artists as Paul Dini, Bruce Timm, Jim Lee, Jeph Loeb, Amanda Conner, Jimmy Palmiotti, Scott Snyder and more. Collects BATMAN ADVENTURES #12, BATMAN #613, COUNTDOWN #10, GOTHAM CITY SIRENS #7, SUICIDE SQUAD #1, BATMAN #13, HARLEY QUINN #21 and HARLEY QUINN AND SUICIDE SQUAD APRIL FOOL'S SPECIAL #1.