October 2001. Both Gabrielle and Pierre Labrell suddenly suffer terrible stomach aches. They are taken to hospital and die a few days apart.
Nelly Crémel disappears while jogging in June 2005; her body is found hidden under some branches eight days later, and there is no doubt that she was murdered.
Willy Pomonti, a retired architect, is found savagely murdered in his opulent villa in La Celle-Saint-Cloud, near Paris.
Christophe Lejard, a father, is shot dead when he is about to leave to work; the investigation will quickly reveal that the man is not as smooth as he seems.
Without news of his wife Adeline since the previous day, Benoît Piet goes to the gendarmerie to report his disappearance.
A teenage girl called Priscilla Ciatti is murdered by stabbing a few hundred metres from her home; the investigators discover that Priscillia felt she was being watched.
The young Mathilde Croguennec is found dead at the foot of a tree during a Teknival in Brittany; the culprit could be hiding among the 43,000 people who came to party.
New accountant Jean-Raymond Blatti's is found murdered with the words "dirty rapist" written on his stomach.