The police finally close in on Niko's prostitution ring, but the Butcher of La Villette is still evading custody. Will Captain Berthaud manage to track him down? Will Niko's men get to him first? Or will he get the opportunity to kidnap another victim? Judge Roban finds that the high moral ground comes at a high price. Pierre discovers that Josephine has made a deal with Szabo in order to save him.