the acid-rain in Callois's eyes. On a hunch, Niemans follows a glacial melt tunnel to a cave that contains a second body, frozen into the ice. Kerkerian traces a car from the 1982 accident to Phillip Sertys in Guernon and meets Niemans while attempting to break into Sertys's apartment. Sertys is the body in the ice, a doctor that worked in the maternity ward at the University hospital. They find the stolen pictures of Judith Herault and evidence that Sertys was breeding and training fighting dogs – and then they find the dogs, and Niemans the "supercop" is momentarily paralyzed by fear, until Kerkerian coaxes him through. Sertys was also mutilated, and his eyes replaced with glass prosthetics, "Like you would find at an eye-doctors" remarks the pathologist, leading Niemans to race back to Cherneze's practice. The doctor is already dead, and they almost catch the killer, who fights off Niemans and races away after deliberately emptying Niemans's gun into the wall but not hitting him. Kerkerian gives chase but the killer escapes. Returning to the scene, where the killer has written "I will trace the source of the crimson rivers" in Cherneze's own blood above his body, they learn the prints on Niemans's gun belong to Judith Herault. Kerkerian goes back to search the grave in Sarzac, which is empty except for a picture of an adult woman with Judith's name, while Niemans goes to Fanny's home. Niemans tells her that although he sees her as physically capable of committing the crimes he doesn't believe her to be guilty. When he returns to the university, the local police captain (Karim Belkhadra) tells him that Callois's thesis is full of Nazi-style eugenics, suggesting perfection can be achieved by breeding athletically- and intellectually-gifted children together. Kerkerian returns with the photo from the grave Niemans recognizes as Fanny and, on the way to her house, they narrowly avoid being run off the road by the Dean's son as they piece together the story: Due to the poor bloodlines and genetic mutations in the faculty's inbred offspring, the doctors at the hospital had been swapping healthy village children with the university children and Callois arranged the matches between both types of children in the college's breeding-program. Sertys, they deduce, must have swapped Fanny for one of the dead faculty babies while leaving her identical twin, Judith, with her birth family as a control