A basement (S03E08)

Two officers stumble upon the lifeless body of a beaten homeless man in the derelict building he called home. Astrid and Raphaëlle rush to the scene, where Astrid is struck by a peculiar detail: the victim is dressed in an impeccably clean suit, devoid of any blood. The mystery soon unravels when another homeless man from the same squat is apprehended. He confesses to dressing the victim in the suit to draw police attention. He claims that three other homeless individuals were murdered in a similar fashion, yet no investigation was initiated. Both Astrid and Raphaëlle are determined to catch the killer, unaware of the emotional toll this case will take on Astrid.