A series of seemingly unrelated deaths forces detectives Dalziel and Pascoe to confront the unsettling possibility that a calculated killer is hiding behind a facade of benevolence. The protagonists must navigate a complex web of social obligations and hidden motives to identify a perpetrator who uses kindness as a weapon. As the investigation deepens, the detectives face internal pressures and the rigid constraints of their department, which threaten to derail their pursuit of justice. The narrative employs a third-person perspective, shifting between the seasoned, cynical Dalziel and the more methodical, introspective Pascoe to provide a multi-faceted view of the unfolding mystery.

Reginald Hill is widely regarded as a master of the British police procedural, and this entry maintains the high standards established throughout his long-running series. Readers typically appreciate the interplay between the two leads, noting how their evolving relationship adds depth to the central mystery. The prose is frequently praised for its intelligence and the author's ability to weave social commentary into a compelling crime narrative. While the plot is complex, the resolution is generally viewed as satisfying and consistent with the established tone of the series. The work stands as a testament to Hill's skill in crafting mysteries that are as much about human nature as they are about the mechanics of a crime.