Somewhere in the Paris district at the beginning of winter. A young woman, Marie Bourgoin, suddenly disappears. The only clue: a tourist brochure left on the crime scene, the Mauritius Islands splattered with blood. The matter is referred to the Versailles crime squad; Chief Fabian, Police Captain Gomez and their forensic crew get to work. The area is combed for evidence, Marie's friends and relatives questioned, clues analyzed... The team draws a blank. Some days later, still within the city boundaries. Two bodies are discovered. One of the dead is a young blonde, just like Marie Bourgoin. Fabian digs deeper into the case, studies Missing Persons files, matching up precise physical details. Result: A serial killer has probably been on the loose for several years. Gomez and Fabian's trials and tribulations are just beginning…