A string of grisly murders in small-town Québec: the victims are all men with sordid pasts—violent criminal antecedents shrugged off by the courts. The killer is one of seven women: all well-educated, well-adjusted, perfectly normal-seeming young career women. But one conceals a very different alter ego, operates as a vigilante with ties to the BDSM underworld. Will Inspector Fournier, together with his colleague Annabelle Saint-Jean, solve the mystery and capture the woman behind the killing rampage? Will you spot the Executrix before it is all over?