Félix

Félix is Roulet’s trained search dog, whose nose turns the investigation’s uncertain spaces into places that can be tested. He helps investigators pursue traces connected to the Rue Verbier killing and the kidnappings, but the limits of scent detection matter as much as its successes: Félix can guide a search, not make every absence conclusive. His work brings a disciplined, bodily form of evidence into a case otherwise driven by witnesses, surveillance images, and inference.

Identity and Role

Félix works with Roulet, who handles him on searches. The dog is deployed where investigators need to know whether a person or relevant object has been present, including the locked car boots examined during the effort to find the missing “boss.” His role is practical and bounded. Félix can smell traces through a closed metal boot, but his detection fails if a body or object is sealed inside a container. That caveat applies to drugs and explosives as well as the person or object being sought, making a negative result informative only under the right conditions.

The story places Félix beside other forms of evidence rather than above them. Rue Verbier’s apartment windows and balconies offer possible human witnesses, and cameras may preserve what no witness noticed; later, investigators scrutinise CCTV images and reconstruct an abduction from a brief interruption in the footage. Félix adds another kind of observation: not a picture or account, but an animal’s response to scent. His contribution depends on investigators understanding what that response can and cannot establish.

Search Work and Limits

When Roulet releases Félix to search the car boots, Darac watches him follow his nose through a crossing of true and false trails. The image makes the search both concrete and uncertain: Félix is actively tracing something, but the competing trails do not immediately disclose which is relevant. Darac feels an odd kinship with the dog as he watches him work, a moment that connects the investigator’s own uncertainty to Félix’s physical pursuit of evidence.

The car-boot search is explicitly not an all-purpose test. Félix can detect a live or dead body through the metal of a closed boot, or detect that a body or an object belonging to the person sought was once there. He cannot do so when the target has been sealed inside a container. Darac recognises the consequence: the search can be conclusive in only one direction. A positive trace can matter, but absence of a trace cannot rule out every possibility. The exchange keeps the dog’s skill from becoming a supernatural shortcut and makes the method’s limits part of the investigation itself.

Félix is also brought in during the search for the missing people. Darac authorises Roulet to let him work, and the dog sets off beneath the investigators’ own searches, scampering and sniffing as the seconds pass. The scene’s tension rests partly on what is not found: the object or person the investigators hoped might turn up remains conspicuously absent. Félix’s work contributes to the search, but it does not erase the uncertainty surrounding the kidnappings.

The Investigation’s Other Clues

The Rue Verbier investigation gives a useful contrast to Félix’s scent work. A west-facing camera covers the marketplace rather than the area directly outside the prayer room. Lartigue identifies footage of the old woman with the trolley as the scene before the incident and promises to compare it with footage from another camera. Separately, Marie Lacroix reports seeing Emil Florian join the prayer meeting, being struck by Delage’s shopping trolley, and bending forward as if in prayer without rising again. Her account also places Florian on the street before the CCTV footage begins, helping Darac reconstruct how he may have noticed Armani, hidden behind a Colonne Morris, and moved when Armani entered a boutique.

The kidnapping inquiry likewise turns on close attention to what a camera shows and fails to show. Darac notices that the recorded time tags remain continuous through a short visual blip, rejecting explanations that would require a jammer or repeated sequence. He instead reasons that the kidnappers photographed the camera’s point of view on Thursday evening and later placed the photograph in front of the lens. The autofocus left it slightly blurred, and the framing differed, but the image concealed the relevant interval. This reconstruction underscores why Félix is one element in a broader evidentiary process: his nose, like the camera, is useful only when its particular blind spots are understood.

Searches and Relationships

During a later search, Félix returns from checking upstairs. Roulet reports that, using a scent control for the missing woman’s father as well, he is as certain as possible that neither the boss nor her father had ever been at the location. Bonbon then tosses Félix a kola kube; the dog catches it and crunches it in one. The small reward follows a search that has helped exclude a suspected location, while preserving the distinction between a carefully supported conclusion and certainty beyond the method’s reach.

That exchange also gives Félix a place within the investigators’ working relationships. Roulet handles him, Darac depends on the search while questioning its limits, and Bonbon rewards him with easy familiarity. The dog is neither a speaking character nor a source of independent explanation. His presence is shown through movement, scenting, and the routines of the people who work with him. Those details make him a trusted member of the investigative effort without attributing thoughts or motives the evidence does not provide.

Narrative Significance

Félix embodies a recurring principle of the investigation: evidence is powerful only when its conditions are made explicit. His scenting can detect traces through metal, yet a sealed container defeats it; his search can narrow possibilities without resolving every uncertainty. The novel places that limited, physical knowledge alongside witness testimony and camera analysis, each with its own coverage and failures.

The contrast between Félix following intersecting trails and Darac reasoning through a deliberately obscured camera image is especially telling. One investigator reads a pattern in scent; the other reconstructs a practical deception from a blurred frame and continuous time tags. Neither method is complete on its own. Félix’s value lies not in delivering an effortless answer, but in making the search tangible—and in showing why a reliable investigation must distinguish what has been found from what a method could not detect.