Épisode 3

Abigail is in shock after Prigent was killed by the explosion of one of the bombs from the First World War that lined the seabed. And Sylvia, his sister-in-law, an environmental activist he had been following, is in a coma. Defying the ban on going out to sea, the scientist returns to the water to understand and record the seismic activity present in the fault off Fécamp.