Mary Fawcett refines the healing recipes she’s inherited from generations of women before her—an uncanny and moral calling to empathize with the sick. When witchfinder Matthew Hopkins arrives in her small village, stoking the fires of hate, he sees not healing but the devil at work. Mary’s benevolent skills have now cast her and her young brother under suspicion of witchery. Soon, the husband of one of Mary’s patients is found murdered, his body carved with strange symbols.

Maine, 1846. Gabriel Stone is desperate to escape the ghosts that haunt him in Massachusetts after his wife’s death, so he moves to Maine, taking a position as a minister in the remote village of Pale Harbor. But not all is as it seems in the sleepy town. Strange, unsettling things have been happening, and the townspeople claim that only one person can be responsible: Sophronia Carver, a reclusive widow who lives with a spinster maid in the eerie Castle Carver. Sophronia must be a witch, and she almost certainly killed her husband. 

Tabby has a peculiar gift: She can communicate with the recently departed. It makes her special, but it also makes her dangerous. As an orphaned child, she fled with her sister, Alice, from their charlatan aunt Bellefonte, who wanted only to exploit Tabby's gift so she could profit from the recent craze for seances. Now a young woman and tragically separated from Alice, Tabby works with her adopted father, Eli, the kind caretaker of a large Boston cemetery.

In the wake of a scandal, the Montrose family and their three daughters - Catherine, Lydia and Emeline - flee Boston for their new country home, Willow Hall. The estate seems sleepy and idyllic. But a subtle menace creeps into the atmosphere, remnants of a dark history that call to Lydia, and to the youngest, Emeline. All three daughters will be irrevocably changed by what follows, but none more than Lydia, who must draw on a power she never knew she possessed if she wants to protect those she loves. For Willow Hall’s secrets will rise, in the end....

Rhode Island, 1846. Estranged from his family, writer Merritt Fernsby is surprised when he inherits a remote estate in the Narragansett Bay. Though the property has been uninhabited for more than a century, Merritt is ready to call it home—until he realizes he has no choice. With its doors slamming shut and locking behind him, Whimbrel House is not about to let Merritt leave. Ever.

Beatrice is the convent's librarian. For years, she has shunned the company of her sisters, finding solace only with her manuscripts. Then, one carnival night, two women, bleeding and stricken, are abandoned outside the convent's walls. Moments from death, one of them presses something into Beatrice's hands: a bewitching book whose pages have a dangerous life of their own.

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?

Luke Taylor has been searching for his missing twin for months, but has begun to believe that his brother might be dead. With his hope in tatters, a tip off leads him to a remote tidal island in the North Sea. It’s further out than the famous Holy Island, and far stranger.

Ellie Briar is the first non-witch to be born into her family for generations. The Briar family of witches run the town of Silverton, caring for its inhabitants with their skills and magic. In the usual scheme of things, they would be burnt for their sorcery, but the church has given them dispensation in return for their protection of the borders of the Darklands, where the much-feared Leech Lords hold sway.

1920s England. Sarah Piper’s lonely, threadbare existence changes when her temporary agency sends her to assist an obsessed ghost hunter. Alistair Gellis—rich, handsome, and scarred by World War I—has been summoned to investigate the spirit of the nineteen-year-old maid Maddy Clare, who is said to haunt the barn where she committed suicide.