On the night of August 15, 2021, seventy-year-old Franz Dubois calls the police. He has just murdered his wife, Nathalie Maillet, the emblematic director of the Spa-Francorchamps circuit, as well as her new partner, Ann Lawrence Durviaux, a respected lawyer and researcher. After this irreparable act, Franz turns the gun on himself. For the very first time, Nathalie Maillet's family speaks out, revealing poignant new details about the evolution of her marriage to Franz Dubois. Through their never-before-seen testimonies, the documentary takes a behind-the-scenes look at this complex relationship and the triggers that led to this tragic event. Accompanied by experts and profiler Danièle Zucker, this film takes an in-depth look at the warning signs of feminicide that punctuated this double murder, offering a hard-hitting reading of the dynamics where passion, success, love and violence intertwine.