A gruesome discovery at a sacred site forces two companions to investigate a murder that threatens the peace of their community. Protagonists Gwyneth and Hereward must navigate the social and religious tensions of their medieval setting to identify a killer after a merchant is found dead at a local spring. Their investigation relies on the wisdom of the hermit Ursus, who provides insights into the local landscape and its inhabitants. The narrative follows their efforts to piece together clues while contending with the limitations of medieval travel and communication. The story unfolds through a traditional third-person perspective that emphasizes the atmospheric details of the Glastonbury region.

Readers frequently highlight the effective use of the Glastonbury setting to ground the mystery in a specific historical atmosphere. Discussion often centers on the chemistry between the two protagonists as they navigate the challenges of their investigation. Critics note that the pacing remains steady, prioritizing the procedural aspects of the mystery over high-octane action sequences. The inclusion of the hermit character is often cited as a key element that adds depth to the world-building and provides necessary guidance for the central duo. Many readers appreciate the focus on period-appropriate details that enhance the authenticity of the narrative.