In March of 1603, as she helps to nurse the dying Queen Elizabeth of England, Frances Gorges dreams of her parents' country estate, where she learned to use flowers and herbs to become a much-loved healer. When King James of Scotland succeeds to the throne Frances is only too happy to stay at home. His court may be shockingly decadent, but his intolerant Puritanism sees witchcraft in many of the old customs -- punishable by death. Yet when her ambitious uncle forces Frances to return to the royal palace, having bought a position as a lady in the bedchamber of the young Pincess Elizabeth, she becomes a ready target for the twisted scheming of the Privy Seal, Lord Cecil. As a dark campaign to destroy both King and Parliament gathers pace, culminating in the Gunpowder Plot of 1605, Frances is surrounded by danger, finding happiness only with the King's precocious young daughter and with Tom Wintour, the one courtier she feels she can trust. But Wintour has a secret that, when revealed, places Frances in conflict with her royal charge and in fear for her own family.