Meredith Hayes has been keeping Willowbrook's darkest secret for two hundred years. She built this town, built these people's lives, and has been watching them thrive on top of a lie she buried when she was twenty years old.

Now she is dying. Her temporal magic is tearing her apart from the inside, and she has six months. Maybe less. She had planned to take the secret with her. To let the lie die quietly alongside the woman who told it.

But the thing she imprisoned in 1826 is waking up. Gardens are withering. Protective wards are failing. And Elena Crane, Willowbrook's memory keeper, is starting to ask the questions Meredith has spent two centuries dreading.

When Meredith finally confesses — to the entity beneath the town, to the community she has been protecting by keeping them ignorant, to the grief she has carried for the woman she let die rather than risk exposure — the town must choose. Destroy what the founding families imprisoned. Or do the thing that has never been done before: transform it entirely.

The ritual will require Meredith to pour every memory she has ever held — two hundred and twenty years of living, loving, and losing — into the heart of an ancient darkness. It will require her death.

But some transformations can only begin on the other side of letting go.