Julie Beauchemin and Maxime Moreli, are two investigators specializing in interrogation. Nothing escapes them. Their way of doing things, their reflection and their analysis of the files allow them to resolve the causes each time. Parallel to the police intrigues, the series tells the story of these two lying specialists who, during their investigations, will also burst the secrets hidden in the heart of their personal lives. It is only at the end of this difficult journey that their own truths will finally appear. A woman, murders, lies ... and the truth!