On the evening of December 15, 1987, at the end of her work, Michelle Perron is savagely stabbed in her vehicle.

During the investigation, everything points in the direction of Gilles Perron, a well-known Radio-Canada director and Michelle's husband.

The twists and turns pile up, and Gilles Perron is finally found guilty of the murder of his wife and sentenced to life in prison.

Acquitted by the jury in the second trial, Gilles Perron regains freedom, but this case is far from over.