Suspicion hangs over Kate McDougall when she discovers the corpse of a young girl in her Eastern Townships lake.

Trudel releases Kate. Kate runs into Dave Thibault, a guy with a bad reputation. Then a second murder is committed, similar to the first.

Kate and Todd question the parents of the second victim. Kate suppresses a deep trauma. A new clue upsets Kate.

Kate admits that childhood nightmares plague her. Trudel gives Kate an ultimatum. Donald Chassé decides to isolate himself.

Kate takes risks in her quest for the truth. The murders are leaked to the press. Jolicoeur and Labonté make an unexpected discovery.

Kate leaves the chalet and continues investigating on her own. Labonté and Jolicoeur find a lead. Trudel makes every effort to save Kate.