Apothecary's Cipher

London, 1666. A city on the edge of flame. A woman hiding a scientific revolution. And a modern-day archivist who holds the final key.

When archivist Nora Halewell uncovers a soot-streaked ledger hidden beneath the floorboards of a forgotten archive, she is transported, literally, into plague-ridden 17th-century London. Caught in a city on the brink of the Great Fire, Nora finds herself entangled with Magda Albury, an unlicensed apothecary safeguarding the secret work of her aunt, Eleanor Cleaves.

But Eleanor was no ordinary herbalist. Her mirrored flasks and coded journals contain not just cures, but the beginnings of chemical science. And someone wants that knowledge for themselves.

As Nora races to decode a centuries-old cipher, she must outwit an ambitious scholar, follow a trail of light and shadow through underground labs, and face a devastating decision: preserve Eleanor's legacy or protect her own future.

The Apothecary's Cipher is the third installment in the acclaimed Nora Halewell Mysteries-a cozy time-travel mystery series perfect for fans of Kate Morton, Susanna Kearsley, and Simone St. James.