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.

Asher Todd comes to live with the mysterious Morwood family as a governess to their children. Asher knows little about being a governess but she is skilled in botany and herbcraft, and perhaps more than that. And she has secrets of her own, dark and terrible—and Morwood is a house that eats secrets. With a monstrous revenge in mind, Asher plans to make it choke. However, she becomes fond of her charges, of the people of the Tarn, and she begins to wonder if she will be able to execute her plan—and who will suffer most if she does.

Orphaned as a young child, Mirin O'Malley has been brought up by her grandparents on their isolated, rambling estate Hob's Hallow. Long ago her family prospered due to a deal struck with the mer, the terrifying creatures who live in the depths of the sea: safety for their merchant ships in return for a child of each generation. But for many years the family have been unable to keep their side of the bargain and their fortunes have suffered as a result. When Mirin's grandfather dies, her grandmother puts in train a plan to restore their glory - but at the price of Mirin's freedom.

Eleven hundred and some years after the death of Christ, in the kingdom that had but recently begun to call itself England, I, Once Was Willem, rose from the dead to defeat a great evil facing the humble village of Cosham. The words enclosed herein are true. I speak of monsters and magic, battle and bloodletting, and the crimes of desperate men. I speak also of secret things, of that which lies beneath us and that which impends above.

Clara Woods is a killer—and perfectly fine with it, too. So what if she takes a couple of lives to make her own a little bit better? At the bottom of her garden is a flower bed, long overgrown, where her late husband rests in peace—or so she’s always thought. Then the girls arrive. Lily and Violet are her nieces, recently orphaned after their affluent parents died on an ill-fated anniversary trip. In accordance with their parents’ will, the sisters are to go to their closest relative—who happens to be Clara.