Face à Face S01E04 - Emprise

In a bar, Vanessa surprises the conversation of a woman talking about her lover, who boasts of having camouflaged the murder of her wife in a domestic accident. She succeeds in identifying the man in question, a manipulative and disturbing psychiatrist. However, to investigate the matter, Justine needs evidence, when there is no complaint and the woman in the bar does not seem to realize what danger she runs while staying near him. How can a victim who is not aware of it understand that a psychological hold can be as fatal as physical violence ?