Cass (plus her ghost best friend, Jacob) is in Paris, where Cass’s parents are filming their show about the world’s most haunted cities. Sure, it’s fun eating croissants and seeing the Eiffel Tower, but there’s true ghostly danger lurking beneath Paris, in the creepy underground Catacombs. When Cass awakens a frighteningly strong spirit, she must rely on her still-developing skills as a ghost hunter - and turn to friends both old and new to help her unravel a mystery. But time is running out, and the spirit is only growing stronger. 

Victor and Eli started out as college roommates—brilliant, arrogant, lonely boys who recognized the same sharpness and ambition in each other. In their senior year, a shared research interest in adrenaline, near-death experiences, and seemingly supernatural events reveals an intriguing possibility: that under the right conditions, someone could develop extraordinary abilities. But when their thesis moves from the academic to the experimental, things go horribly wrong.

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. Olivia knows that Gallant is hiding secrets, and she is determined to uncover them. 

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.

Nearly six months after Kate and August were first thrown together, the war between the monsters and the humans is a terrifying reality. In Verity, August has become the leader he never wished to be, and in Prosperity, Kate has become the ruthless hunter she knew she could be. When a new monster emerges from the shadows—one who feeds on chaos and brings out its victim’s inner demons—it lures Kate home, where she finds more than she bargained for. She’ll face a monster she thought she killed, a boy she thought she knew, and a demon all her own.

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.

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.

Many years ago, Claire was named Head Librarian of the Unwritten Wing - a neutral space in Hell where all the stories unfinished by their authors reside. Her job consists mainly of repairing and organizing books, but also of keeping an eye on restless stories that risk materializing as characters and escaping the library. When a Hero escapes from his book and goes in search of his author, Claire must track and capture him with the help of former muse and current assistant Brevity and nervous demon courier Leto. 

Morrigan Crow is cursed. Having been born on Eventide, the unluckiest day for any child to be born, she's blamed for all local misfortunes, from hailstorms to heart attacks - and, worst of all, the curse means that Morrigan is doomed to die at midnight on her 11th birthday. But as Morrigan awaits her fate, a strange and remarkable man named Jupiter North appears. Chased by black-smoke hounds and shadowy hunters on horseback, he whisks her away into the safety of a secret, magical city called Nevermoor.

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. 

Harry Potter has never even heard of Hogwarts when the letters start dropping on the doormat at number four, Privet Drive. Addressed in green ink on yellowish parchment with a purple seal, they are swiftly confiscated by his grisly aunt and uncle. Then, on Harry's eleventh birthday, a great beetle-eyed giant of a man called Rubeus Hagrid bursts in with some astonishing news: Harry Potter is a wizard, and he has a place at Hogwarts School of Witchcraft and Wizardry. An incredible adventure is about to begin! 

When Nicole Rayburn travels to Lockwood Hall and begins to research Alys’s story for a new book, she discovers startling irregularities in Alys’s case. Nicole’s suspicions mount as every answer leads to more questions. What really happened to Alys? And what became of her son, who disappeared the day she was hanged? Could it be that Alys’s death was the result of a well-planned conspiracy, or is there another, less obvious answer? And who is trying to sabotage Nicole's efforts by stealing her work?

There are those who walk among us who are no longer alive, but not yet crossed over. They seek retribution…vengeance…to warn. Among the living, few intuit their presence. Katie MacDonald is one who can. As she’s drawn deeper and deeper into a gruesome years-old murder, whispered warnings from a spectral friend become more and more insistent. But Katie must uncover the truth: could David Beckett really be guilty of his fiancée’s murder?

Emilia and her twin sister Vittoria are streghe - witches who live secretly among humans, avoiding notice and persecution. One night, Vittoria misses dinner service at the family's renowned Sicilian restaurant. Emilia soon finds the body of her beloved twin...desecrated beyond belief. Devastated, Emilia sets out to find her sister's killer and to seek vengeance at any cost - even if it means using dark magic that's been long forbidden. Then, Emilia meets Wrath, one of the Wicked-princes of Hell she has been warned against in tales since she was a child.

Homeless, hunted, and desperate to escape a bitter storm, Keira takes refuge in an abandoned groundskeeper's cottage. Her new home is tucked away at the edge of a cemetery, surrounded on all sides by gravestones: Some recent, some hundreds of years old, all suffering from neglect. And in the darkness, she can hear the unquiet dead whispering. The cemetery is alive with faint, spectral shapes, led by a woman who died before her time...and Keira, the only person who can see her, has become her new target.