It began on New Year’s Eve. The sickness came on suddenly, and spread quickly. The fear spread even faster. Within weeks, everything people counted on began to fail them. The electrical grid sputtered; law and government collapsed - and more than half of the world’s population was decimated. Where there had been order, there was now chaos. And as the power of science and technology receded, magick rose up in its place.

Daughter of a cold, controlling mother and an anonymous donor, studious, obedient Elizabeth Fitch finally let loose one night, drinking too much at a nightclub and allowing a strange man’s seductive Russian accent to lure her to a house on Lake Shore Drive. Twelve years later, the woman now known as Abigail Lowery lives alone on the outskirts of a small town in the Ozarks.

After an assault at her family home in Maine, Dr. Miranda Jones is determined to put the experience behind her. Distraction comes when she is summoned to Italy - to verify the authenticity of a Renaissance bronze of a Medici courtesan known as The Dark Lady. But instead of cementing Miranda’s reputation as the leading expert in the field, the job nearly destroys it when her professional judgment is called into question.

Kit Darling is a maid with a snooping problem. She’s the “invisible girl,” compelled to poke into her wealthy clients’ closely guarded lives. It’s a harmless hobby until Kit sees something she can’t unsee in the home of her brand-new clients: a secret so dark it could destroy the privileged couple expecting their first child. This makes Kit dangerous to the couple. In turn, it makes the couple—who might kill to keep their secret—dangerous to Kit.

When Nell Channing arrives on charming Three Sisters Island, she believes that she's finally found refuge from her abusive husband - and from the terrifying life she fled so desperately eight months ago. Just as Nell starts to wonder if she'll ever be able to break free of her fear, she realizes that the island suffers from a terrible curse - one that can only be broken by the descendants of the Three Sisters, the witches who settled the island back in 1692.