Anne-Marie combats the misinformation prompting irrational behavior. The minister no longer has faith in her and wants to be directly involved in the experimental treatment. At the lab, Nelli follows up a new lead in the investigation. Will she find the source of the virus?

A drop in the number of new cases heralds the end of the epidemic. Will there be a second wave? Anne-Marie is suddenly confronted with several cases of sick people who have had no contact with infected individuals. The team works to solve the puzzle. Sabrina and Juliette sell their first ferret.