In a remote West-country village, the arrival of the Witch-finder General threatens to destroy a young woman accused of dark arts. Nell, the granddaughter of a local cunning woman, must navigate a landscape of superstition and fear as the community turns against her following the mysterious illness of the minister's daughters. The narrative utilizes a dual-timeline structure, shifting between the immediate crisis of the witch trials and the retrospective confession of Patience Madden decades later. Nell faces the physical threat of execution and the logical impossibility of proving her innocence in a world governed by religious fervor and local folklore.

Readers frequently highlight the effective use of atmosphere to convey the claustrophobic nature of the village during the witch trials. Discussion often centers on the contrast between the two timelines, noting how the later confession provides a necessary perspective shift on the events of the past. Critics appreciate the grounded portrayal of historical superstition, which avoids overly fantastical elements in favor of human-driven conflict. The pacing is often described as deliberate, allowing the tension to build steadily as the threat of the Witch-finder General looms over the characters. Many readers find the exploration of the protagonist's isolation to be the most compelling aspect of the narrative.