Roulet

Roulet is a dog handler whose work gives the search for the missing boss and her father both a practical method and a clear limit. Working with Félix, he advises Captain Paul Darac on what scent detection can establish, maintains an unobtrusive street surveillance operation, and eventually reports that neither missing person had ever been inside the house under investigation. His contribution redirects the inquiry from a suspected location toward the people and places still to be searched.

Role and Introduction

Roulet enters the investigation as a professional resource called in alongside other measures. Darac has already broadcast an update from Roland Granot and made two calls when the handler arrives. The search is urgent, and Darac treats the dog team as a precaution worth pursuing even after news of a van offers another possible lead. He describes the parallel effort as a belt-and-braces approach: the team must not let one promising avenue prevent it from checking the others.

Roulet answers Darac’s radio message and asks whether they should proceed. Darac says they should, then confirms that Roulet has completed scent control using a pair of Madame Laseige’s shoes. The detail grounds the operation in a specific scent reference rather than an abstract claim that a dog can simply find a person. Roulet is not merely present with Félix; he prepares the search so that the dog’s findings can be interpreted against a known scent.

Expertise and Its Limits

Before the search begins, Roulet gives Darac a careful account of Félix’s abilities. Félix can detect the scent of a living or dead body through the metal of a closed car boot. He can also detect whether a body had been in a location, or whether an object belonging to the person sought had been there. Those capabilities make the dog useful even when a vehicle or room is not immediately accessible to investigators.

Roulet also specifies the boundary that prevents a positive-sounding search from becoming an absolute answer. Félix cannot detect a body or object if it is, or was, sealed inside a container. Roulet applies the limitation broadly, including drugs and explosives as examples. His warning makes the method more credible, not less: the dog can provide strong evidence under defined conditions, but concealment inside another sealed vessel can defeat the test. Darac recognizes the consequence, concluding that the search can be conclusive in only one direction. A scent finding may establish presence; failure to find a scent cannot rule out every possible means of concealment.

This qualification matters because the investigation is moving quickly among competing leads. Roulet’s expertise does not promise certainty on demand; it clarifies what the evidence can and cannot say. In that sense, his work helps Darac distinguish a useful result from an overconfident conclusion.

Surveillance and Search

Later, while the operation is focused on a house, Roulet reports that the street surveillance is not drawing attention. No passer-by would know that a surveillance operation is under way, and if Corinne Delage or anyone else returns, they will be able to walk straight up to the house. The report shows Roulet contributing beyond scent work: he is also responsible for keeping the watch discreet enough that a returning person will not be warned away.

The team continues to investigate the property while awaiting the search results. Félix pads into the room after searching upstairs. Roulet then delivers his central finding with measured confidence: as certain as he can be, the missing boss was never there. The wording marks an evidentiary conclusion rather than omniscience, consistent with the cautions he gave earlier about what scent detection can establish.

Finding and Narrative Significance

Roulet has used a scent control for the boss’s father as well, and his report excludes him from the house too. This second result is consequential: the property did not hold either of the two missing people. Darac immediately turns to the implications and calls Lartou to have the others brought in, showing that Roulet’s result changes the next operational step rather than merely adding detail to the record.

The character is defined through this precise, bounded competence. He explains the conditions of the search before offering its result, keeps the street watch unobtrusive, and reports a negative finding without overstating what it proves. Félix’s work narrows the investigation, while Roulet’s cautious account tells the investigators how much weight that narrowing can bear. In a case crowded with uncertainty, his contribution is not a miraculous answer but a reliable distinction between what has been ruled out and what remains open.