Effy Sayre has always believed in fairy tales. Haunted by visions of the Fairy King since childhood, she’s had no choice. Her tattered copy of Angharad—Emrys Myrddin’s epic about a mortal girl who falls in love with the Fairy King, then destroys him—is the only thing keeping her afloat. So when Myrddin’s family announces a contest to redesign the late author’s estate, Effy feels certain it’s her destiny. But musty, decrepit Hiraeth Manor is an impossible task, and its residents are far from welcoming.

Opal is a lot of things—orphan, high school dropout, full-time cynic and part-time cashier—but above all, she's a determined to find a better life for her younger brother Jasper. One that gets them out of Eden, Kentucky, a town remarkable for only two things: bad luck and E. Starling, the reclusive nineteenth century author of The Underland, who disappeared over a hundred years ago. All she left behind were dark rumors—and her home. Everyone agrees that it’s best to ignore the uncanny mansion and its misanthropic heir, Arthur. Almost everyone, anyway.

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.

Meet Toadling. On the day of her birth, she was stolen from her family by the fairies, but she grew up safe and loved in the warm waters of faerieland. Once an adult though, the fae ask a favor of Toadling: return to the human world and offer a blessing of protection to a newborn child. Simple, right? If only. Centuries later, a knight approaches a towering wall of brambles, where the thorns are as thick as your arm and as sharp as swords. He's heard there's a curse here that needs breaking, but it's a curse Toadling will do anything to uphold.

In the mid-19th century, an impoverished orphan flees Ireland and travels alone to America in search of her only family; an estranged, rich uncle. However, when the handsome Master of her uncle's mansion takes a dark interest in the lonely orphan, she becomes trapped in a life of servitude and must again fight for her freedom. Will the orphan fulfill her dreams of a better life in a new country, or will America be worse than Ireland?

As the daughter of a rancher in 1840s Mexico, Nena knows a thing or two about monsters—her home has long been threatened by tensions with Anglo settlers from the north. But something more sinister lurks near the ranch at night, something that drains men of their blood and leaves them for dead.

Now reduced to a schoolyard chant, the Hope family murders shocked the Maine coast one bloody night in 1929. While most people assume seventeen-year-old Lenora was responsible, the police were never able to prove it. Other than her denial after the killings, she has never spoken publicly about that night, nor has she set foot outside Hope’s End, the cliffside mansion where the massacre occurred. It’s now 1983, and home-health aide Kit McDeere arrives at a decaying Hope’s End to care for Lenora after her previous nurse fled in the middle of the night.

Viola Marek is a struggling real estate agent, and a vampire. But her biggest problem currently is that the house she needs to sell is haunted. The ghost haunting the house has been murdered, and until he can solve the mystery of how he died, he refuses to move on. Fox D’Mora is a medium, and though is also most-definitely a shameless fraud, he isn’t entirely without his uses—seeing as he’s actually the godson of Death.

"Pray they are hungry." Kara finds these words in the mysterious bunker that she’s discovered behind a hole in the wall of her uncle's house. Freshly divorced and living back at home, Kara now becomes obsessed with these cryptic words and starts exploring the peculiar bunker - only to discover that it holds portals to countless alternate realities. But these places are haunted by creatures that seem to hear thoughts...and the more you fear them, the stronger they become.

In Garner County, girls are told they have the power to lure grown men from their beds, to drive women mad with jealousy. That’s why they’re banished for their 16th year, to release their magic into the wild so they can return purified and ready for marriage. But not all of them will make it home alive. Sixteen-year-old Tierney James dreams of a better life - a society that doesn’t pit friend against friend or woman against woman, but as her own grace year draws near, she quickly realizes that it’s not just the brutal elements they must fear.

Marra never wanted to be a hero. As the shy, convent-raised, third-born daughter, she escaped the traditional fate of princesses, to be married away for the sake of an uncaring throne. But her sister wasn’t so fortunate—and after years of silence, Marra is done watching her suffer at the hands of a powerful and abusive prince. Seeking help for her rescue mission, Marra is offered the tools she needs, but only if she can complete three seemingly impossible tasks:

After centuries of sleep, the gods are warring again. But eighteen-year-old Iris Winnow just wants to hold her family together. Her mother is suffering from addiction and her brother is missing from the front lines. Her best bet is to win the columnist promotion at the Oath Gazette. To combat her worries, Iris writes letters to her brother and slips them beneath her wardrobe door, where they vanish—into the hands of Roman Kitt, her cold and handsome rival at the paper.

"Mom seems off." Her brother's words echo in Sam Montgomery's ear as she turns onto the quiet North Carolina street where their mother lives alone. She brushes the thought away as she climbs the front steps. Sam's excited for this rare extended visit, and looking forward to nights with just the two of them, drinking boxed wine, watching murder mystery shows, and guessing who the killer is long before the characters figure it out. But stepping inside, she quickly realizes home isn’t what it used to be.

Seventeen-year-old Aderyn ("Ryn") only cares about two things: her family and her family's graveyard. And right now, both are in dire straits. Since the death of their parents, Ryn and her siblings have been scraping together a meager existence as gravediggers in the remote village of Colbren, which sits at the foot of a harsh and deadly mountain range that was once home to the fae. The problem with being a gravedigger in Colbren, though, is that the dead don't always stay dead.

Elspeth Spindle needs more than luck to stay safe in the eerie, mist-locked kingdom of Blunder—she needs a monster. She calls him the Nightmare, an ancient, mercurial spirit trapped in her head. He protects her. He keeps her secrets. But nothing comes for free, especially magic. When Elspeth meets a mysterious highwayman on the forest road, her life takes a drastic turn. Thrust into a world of shadow and deception, she joins a dangerous quest to cure Blunder from the dark magic infecting it.