Cyril is doing his Taï-Chi in a corner of the Domaine du Manoir park. A golf club slams into the back of Cyril's neck, killing him with a dead blow. The investigation is entrusted to Maud Arthuis, who is more than 8 months pregnant but widowed, the future father of the child she is carrying, died of a stroke early in her pregnancy. Maud receives unexpected help from Lucien Labeguerri, a private detective assigned by Louise de Crémier's daughter "the Duchess" whom Cyril, the victim, had recently married. Estelle believed it was an abuse of weakness. Who killed Cyril? Louise's daughter? A hunter dispossessed of his usual land? Cyril's ex-girlfriend? The steward of the Manor? Maud and Lucien are not at the end of their surprises, which put them in a position to confide in their painful course of life, when a new assassination occurs.
