Once, there were four worlds, nestled like pages in a book, each pulsing with fantastical power and connected by a single city: London. Until the magic grew too fast and forced the worlds to seal the doors between them in a desperate gamble to protect their own. The few magicians who could still open the doors grew more rare as time passed and now, only three Antari are known in recent memory—Kell Maresh of Red London, Delilah Bard of Grey London, and Holland Vosijk, of White London.

Twenty-year-old Violet Sorrengail was supposed to enter the Scribe Quadrant, living a quiet life among books and history. Now, the commanding general—also known as her tough-as-talons mother—has ordered Violet to join the hundreds of candidates striving to become the elite of Navarre: dragon riders. But when you’re smaller than everyone else and your body is brittle, death is only a heartbeat away...because dragons don’t bond to “fragile” humans. They incinerate them. With fewer dragons willing to bond than cadets, most would kill Violet to better their own chances of success.

Kate Harker and August Flynn are the heirs to a divided city - a city where the violence has begun to breed actual monsters. All Kate wants is to be as ruthless as her father, who lets the monsters roam free and makes the humans pay for his protection. All August wants is to be human, as good-hearted as his own father, to play a bigger role in protecting the innocent - but he's one of the monsters. One who can steal a soul with a simple strain of music.

Ever since Cass almost drowned (okay, she did drown, but she doesn't like to think about it), she can pull back the Veil that separates the living from the dead...and enter the world of spirits. Her best friend is even a ghost. So things are already pretty strange. But they're about to get much stranger. When Cass's parents start hosting a TV show about the world's most haunted places, the family heads off to Edinburgh, Scotland. Here, graveyards, castles, and secret passageways teem with restless phantoms. And then Cass meets a girl who shares her "gift"....

It's been 297 days since David died - and came back. He may have survived the avalanche, but the aftermath has been far worse. His wife moved out, taking his son with her, and a devastated David hasn't left his house since, terrified of the mysterious new power that followed him home from the ill-fated expedition. After months in seclusion, David's ready for a fresh start, and ventures out, determined to keep his power in check. But David's power isn't the one he needs to worry about.

Aria Blue seems like an ordinary 12-year-old. She loves music, and colorful shoelaces, and taste-testing various types of cookies. But there is much more to Aria than meets the eye. She can use her shadow like a door to travel from place to place. She can dream things into existence. And she can see when certain people need help. Because Aria is a guardian angel. Her mission? To find and guide three different girls - Gabby, Caroline, and Mikayla - through their different problems. If she succeeds, Aria will earn her wings.

Kell is one of the last Travelers - magicians with a rare, coveted ability to travel between parallel universes. As such, he can choose where he lands. There's Grey London, dirty and boring, without any magic, ruled by a mad King George. Then there's Red London, where life and magic are revered, and the Maresh Dynasty presides over a flourishing empire. There's White London, ruled by whoever has murdered their way to the throne. And once upon a time, there was Black London...but no one speaks of that now.

Unpacking her belongings in her new hometown of Portland, Oregon, herbalist and reformed alchemist Zoe Faust can't help but notice she's picked up a stowaway. Dorian Robert-Houdin is a living, breathing three-and-half-foot gargoyle - not to mention a master of French cuisine - and he needs Zoe's expertise to decipher a centuries-old text. Zoe, who's trying to put her old life behind her, isn't so sure she wants to reopen her alchemical past... until the dead man on her porch leaves her no choice.

Worn out after decades of packing steel and raising hell, Viv, the orc barbarian, cashes out of the warrior’s life with one final score. A forgotten legend, a fabled artifact, and an unreasonable amount of hope lead her to the streets of Thune, where she plans to open the first coffee shop the city has ever seen. However, her dreams of a fresh start filling mugs instead of swinging swords are hardly a sure bet. Old frenemies and Thune’s shady underbelly may just upset her plans. To finally build something that will last, Viv will need some new partners, and a different kind of resolve.

Librarian Sylvia Ashe knows nothing about her past, having grown up without a father and a mother who refused to discuss him. When she stumbles upon a diary that suggests she's descended from magicians, she's skeptical. After all, magicians are special, and she's just an ordinary woman who loves books. She seeks answers from a member of the most prominent family of magicians, but she quickly learns that finding the truth won't be easy, especially when he turns out to be as artless as her, and more compelling and dangerous than books.

France, 1714: In a moment of desperation, a young woman makes a Faustian bargain to live forever - and is cursed to be forgotten by everyone she meets. Thus begins the extraordinary life of Addie LaRue, and a dazzling adventure that will play out across centuries and continents, across history and art, as a young woman learns how far she will go to leave her mark on the world. But everything changes when, after nearly 300 years, Addie stumbles across a young man in a hidden bookstore and he remembers her name.

Ketterdam: a bustling hub of international trade where anything can be had for the right price - and no one knows that better than criminal prodigy Kaz Brekker. Kaz is offered a chance at a deadly heist that could make him rich beyond his wildest dreams. But he can't pull it off alone.

Before he led Ravka’s Second Army, before he created the Fold, and long before he became the Darkling, he was just a lonely boy burdened by an extraordinary power. Eryk and his mother, Lena, have spent their lives on the run. But they will never find a safe haven. They are not only Grisha—they are the deadliest and rarest of their kind.

Nikolai Lantsov has always had a gift for the impossible. No one knows what he endured in his country’s bloody civil war - and he intends to keep it that way. Now, as enemies gather at his weakened borders, the young king must find a way to refill Ravka’s coffers, forge new alliances, and stop a rising threat to the once-great Grisha Army. Yet with every day a dark magic within him grows stronger, threatening to destroy all he has built.

Young Emmett Farmer is working in the fields when a strange letter arrives summoning him away from his family. He is to begin an apprenticeship as a bookbinder - a vocation that arouses fear, superstition, and prejudice among their small community, but one neither he nor his parents can afford to refuse. For as long as he can recall, Emmett has been drawn to books, even though they are strictly forbidden. Bookbinding is a sacred calling, Seredith informs her new apprentice, and he is a binder born.

The Archive, an otherworldly library, contains the bodies of everyone who has ever died. But when the Archive is compromised from within, 16-year-old Mackenzie Bishop must use her skills as a Keeper to identify the traitor and prevent violent Histories from escaping into our world.

Kell is one of the last Travelers - magicians with a rare, coveted ability to travel between parallel universes. As such, he can choose where he lands. There's Grey London, dirty and boring, without any magic, ruled by a mad King George. Then there's Red London, where life and magic are revered, and the Maresh Dynasty presides over a flourishing empire. There's White London, ruled by whoever has murdered their way to the throne. And once upon a time, there was Black London...but no one speaks of that now.

Ever since Cass almost drowned (okay, she did drown, but she doesn't like to think about it), she can pull back the Veil that separates the living from the dead...and enter the world of spirits. Her best friend is even a ghost. So things are already pretty strange. But they're about to get much stranger. When Cass's parents start hosting a TV show about the world's most haunted places, the family heads off to Edinburgh, Scotland. Here, graveyards, castles, and secret passageways teem with restless phantoms. And then Cass meets a girl who shares her "gift"....

Olivia Prior has grown up in Merilance School for Girls, and all she has of her past is her mother’s journal—which seems to unravel into madness. Then, a letter invites Olivia to come home to Gallant. Yet when Olivia arrives, no one is expecting her. But Olivia is not about to leave the first place that feels like home; it doesn’t matter if her cousin Matthew is hostile, or if she sees half-formed ghouls haunting the hallways.

It's been 297 days since David died - and came back. He may have survived the avalanche, but the aftermath has been far worse. His wife moved out, taking his son with her, and a devastated David hasn't left his house since, terrified of the mysterious new power that followed him home from the ill-fated expedition. After months in seclusion, David's ready for a fresh start, and ventures out, determined to keep his power in check. But David's power isn't the one he needs to worry about.