The Dark Knight and the Man of Steel are close friends in the modern day-but the two weren't always such close allies. Discover how two of the World's Finest Super Heroes met for the first time in the New 52, and the mysterious adventure that takes them to a whole new world-the world of Earth-2! The heroes of the main DC Universe meet their Earth-2 counterparts for the first time! Collects BATMAN #1-4 and JUSTICE LEAGUE #23.1: DARKSEID.

Nightwing. The Flash. Starfire. Donna Troy. Beast Boy. Cyborg. Red Arrow. Raven. Years ago they learned at the side of the World's Greatest Heroes-until the threats became too dangerous for even their mentors to handle. Then these young superheroes struck out on their own, fighting against evil while united under their battle cry: TITANS TOGETHER! But long ago these friends and warriors went their separate ways, leaving the Titans mantle to other young heroes…and it's that mantle that could get them all killed. An all-powerful enemy from the team's past has returned with a vengeance, aiming to destroy anyone who's ever been a Titan. With their superhero successors caught in the line of fire, the original Titans must reunite to stop the onslaught, before the Titans fall forever… Writer Judd Winick (Green Arrow, Outsiders) joins artists Ian Churchill (Supergirl), Joe Benitez (Wraithborn) and others to reform one of comics' greatest teams! Collects Titans East Special #1 and Titans #1-11.

Brainiac returns to invade Earth with his ultimate weapon, Warworld, a planet-sized satellite built for destruction. With the help of super-powered friends like Wonder Woman, The Flash, Green Lantern and many more, Superman must lead the attack on Brainiac and protect Earth! Collects ACTION COMICS #474-475, SUPERMAN: MAN OF STEEL #9-10, ADVENTURES OF SUPERMAN #488-489, SUPERMAN #66.

POISON IVY BLOSSOMS INTO HER FIRST SOLO ADVENTURE! There's animal. There's vegetable. And there's somewhere in between. That's where Dr. Pamela Isley, a.k.a. Poison Ivy, finds herself. Instead of battling the Dark Knight, she is now a researcher at the Gotham Botanical Gardens, studying the possibility of creating plant-human hybrids. But when her fellow scientists start turning up dead, she's both the natural leading suspect…and the only person (or plant) who can crack the case. To solve the mystery, Poison Ivy must team up-or throw down-with her oldest friends and closest frenemies, from Harley Quinn to Catwoman to the Swamp Thing. Can she keep things under control, or will she be responsible for a deadly new harvest? Find out in POISON IVY: CYCLE OF LIFE AND DEATH. Sprouting from the brains of the up-and-coming creative team of writer Amy Chu and artist Clay Mann, it's a mean, green murder mystery starring one of Batman's greatest rogues! Collects POISON IVY: CYCLE OF LIFE AND DEATH #1-6.

Nightwing is busting a group of criminals when he discovers that his old friend and ally Speedy has come into town looking for him. He needs Dick's help to track down Cheshire... the mother of Roy's child! Then, in a second adventure teaming together the two Teen Titans, Nightwing and Speedy get caught up in a war between two rival gangs.

Golden Dawn' part 1! When one of Batman's childhood friends goes missing, the Dark Knight searches for clues—a path that leads him down the darkest alleys of Gotham City and into the hands of some of its most dangerous villains!

The entire Green Arrow run of New York Times best-selling author Jeff Lemire is now collected in its entirety in this all-new Essential Edition trade paperback graphic novel! Oliver Queen thought he had it all figured out. As the heroic archer Green Arrow, he'd finally found a sense of purpose, friends to aid him, even a place on the Justice League of America. But now he's not even sure where he came from... or whom he came from. As Green Arrow discovers that his stranding on a desert island was more than just an accident, there seem to be more sinister forces at work behind all these sudden revelations. The Queen family is embroiled in a war generations old. A war of clans. A war of outsiders. Acclaimed creative team Jeff Lemire (Animal Man) and Andrea Sorrentino (I, Vampire) take Green Arrow on his most challenging adventure yet. Collects Green Arrow #17-34, Green Arrow Futures End #1 and Green Arrow Secret Origins. The DC Essential Edition series of graphic novels highlights the best standalone stories the medium has to offer featuring comics' greatest characters. These trade paperback editions focus on the easiest entry points DC has in its vast library, with seminal, groundbreaking tales that transcend the printed page. Start with the Essentials.

Amanda Conner and Jimmy Palmiotti—the twisted minds behind the New York Times best-selling series HARLEY QUINN—introduce Starfire's first ongoing series! Life is bright and beautiful in Florida's Conch Republic. Warm weather, laidback attitudes, an orange-skinned alien warrior princess, tons of sunshine…wait a minute. That's right: Princess Koriand'r of the planet Tamaran, the former Outlaw known as Starfire, has relocated to Key West. Starfire is determined to start a new life for herself—a normal life. But assimilation is easier said than done. Though she quickly makes new friends (some of whom want to get very friendly), Kori finds the Sunshine State more challenging than she expected. She'll fly through the eye of a raging hurricane and battle aliens and subterranean creatures; but, first and foremost, she'll need to find a roof to put over her head and a job to pay for it. Is Kori ready for a life in Key West? Is Key West ready for a life with Starfire? Collects STARFIRE #1-6 and DC SNEAK PEEK: STARFIRE #1.

From writer Peter David (THE INCREDIBLE HULK, X-FACTOR) and artist Gary Frank (ACTION COMICS, JUSTICE LEAGUE) comes the start of the classic series that created a revolutionary new identity for the Maid of Might! WHO IS LINDA DANVERS? To her parents, Linda is a former good girl who now dabbles on the wrong side of the law. To her friends, she's a struggling artist and the ultimate Supergirl fan. To her boyfriend, Buzz, she's an eager accomplice as they try to harness dark forces more powerful than either of them can control. And after Buzz tries to use her to summon a demon, Linda Danvers is...dead? To save Linda's life, Matrix, a protoplasmic version of Supergirl, uses her powers to fuse the two of them together. Now, sharing memories, sharing superpowers, the entity formerly known as Linda Danvers is something else entirely. Is Linda still a human with the same damaged soul? Or has Supergirl done the unthinkable and stolen a new life for herself? There are no easy answers, but Linda knows she must use her new powers to atone for her past sins. Because whatever else she may be, for now, she's... SUPERGIRL! SUPERGIRL BOOK ONE collects SUPERGIRL #1-9, SUPERGIRL ANNUAL #1, SUPERGIRL PLUS #1 and a story from SHOWCASE '96 #8.

Friends. Teammates. Titans. Donna Troy, Arsenal, Garth, Lilith and Nightwing were all that and more until a mysterious force erased their memories, forcing them to forget what they could accomplish together. Reunited with their memories returned, the Titans must destroy the interdimensional demon that broke them apart and threatens reality itself. THEY SAID IT: "Grayson and Donna were a couple of the characters I first worked on at DC, so it feels like a homecoming for me," explains penciller Brett Booth. "I'm beyond happy!" WARNING: Do NOT read this issue until after you read DC UNIVERSE: REBIRTH #1!