What drives a seemingly ordinary man to murder his wife? In October 2019, an unthinkable tragedy hit the peaceful village of Courfaivre in Switzerland: Christophe Keller slit his wife Mélanie's throat before cutting his own. The crime shocked the whole country. What had happened between this couple, living a seemingly ordinary life with their three children? This film talks to the victim's sister, children, and friends to try and get to the bottom of how family life could descend to rape and murder. Each year, nearly 90,000 women are killed by their partner or ex-partner throughout the world; could more have been done to save Mélanie?