Initially perceived as a reclusive, decorated war veteran living quietly in St. Denis, his past is shrouded in mystery. His death serves as the catalyst for the unfolding events and investigation in the narrative.

An outsider and the by-the-book officer of the gendarmerie, whose formal and impersonal approach to policing contrasts with Bruno's community-oriented methods. Represents centralized state authority and its limitations in dealing with local issues.

A competent and ambitious inspector from the Police Nationale, who becomes a professional ally and romantic interest for Bruno. Her urban perspective complements Bruno's local knowledge during the investigation.

The mayor of St. Denis, a mentor to Bruno, and a protector of the town's identity, he uses his political connections to benefit the community. Supports Bruno's unconventional methods to safeguard local interests.

Family members of Hamid (Hussein), with Momu being a respected mathematics teacher and Karim a local rugby star. They are well-integrated into the community, and their relationships are affected by the unfolding investigation.

Two elderly Resistance veterans and town fixtures known for their longstanding feud, each with ties to rival factions within the Resistance. Their history and actions bring deeper historical context to the plot.

Teenagers involved with the far-right, whose presence near the crime scene initially leads to suspicion. Their storyline touches on contemporary political issues without being central to the murder case.

British expatriates in St. Denis, with Pamela known for restoring a farmhouse and Christine being a historian. Their presence and expertise become important to uncovering historical truths linked to the investigation.