October 16, 1984. The body of Grégory Villemin, 4 years old, is found drowned in Vologne. As journalists flock, the gendarmes follow the trail of a mysterious "Crow"

While the gendarmes believe they have the culprit in the person of Bernard Laroche, their witness retracts. But an unexpected testimony quickly brings out a new thesis...

Sesmat is replaced at the head of the investigation by Corazzi, who is convinced of Christine's guilt. Feeling let down by everyone, Jean-Marie plans to take justice into his own hands...

The noose tightens around Christine, while Jean-Marie faces the consequences of his act. The case becomes even more publicized when Marguerite Duras publishes an article.

Christine, imprisoned and pregnant, begins a hunger strike. She then publishes a book to defend herself, while Judge Lambert plays his last cards to finally solve the case.