When Niemans obtains X-ray images of the damaged frescos, they provide further insight into the case, but does a missing fragment from the biblical scenes portrayed hold the key to the killer?
Two more people are shot dead, in the cemetery: a married couple who took in foster children. But a quotation from an ancient tale about an ill-fated group of children on a memorial provides a clue.
In a wine-growing region at harvest time, a battered corpse is discovered under rubble when a vault collapses during the renovation of a chapel, destroying a fresco. Was it an accident or foul play?
When two men discover the severed hand of a child, Niemans and Camille find the local police distracted by the case of a serial killer armed with a rifle. Can they find clues at a children's home?
It seems the monks believe they have discovered sinister secret messages in the ancient music they've been studying. As Camille and Niemans get closer to the truth, they encounter a satanic sect.
The body of another spa client is found. What's the connection between the village, the spa director whose clients are being killed and the legends that seem to terrify everyone?
As Camille and Niemans go to the countryside to meet Arnaud Morillon, a former colleague of the BRI and friend of Niemans. They only find his corpse, infected with buboes, witnesses of the black plague, yet eradicated for centuries.
The butler of the Monferville estate finds a 17-year-old in a pitiful condition. The teenager claims to be Herminien, a son of the family who disappeared 6 years ago. Camille is looking for her son Léo.