Thérèse Desqueyroux (French pronunciation: [teʁɛz dɛskɛʁu]) is the most famous novel by François Mauriac.
The novel is set in the Landes, a sparsely populated area of south-west France covered largely with pine forests. As it opens, a court case is being dismissed. The main character, the titular Thérèse, has been tried for poisoning her husband Bernard by overdosing him with Fowler's Solution, a medicine containing arsenic. Despite strong evidence against her, including prescriptions she forged, the case has been dropped; the family closed ranks to prevent scandal and Bernard himself testified in her defence. On the journey home, Thérèse reflects at length on her life so far, trying to understand what brought her to continue poisoning her husband after she observed him taking an accidental overdose. She suggests that her actions were part of an "imperceptible slope", caused in part by the pressures of motherhood and marriage and the stifling life of a Catholic landowner's wife in 1920s rural France. However, neither Thérèse nor the narrator provides a clear explanation for her behaviour.
Thérèse Desqueyroux (novel). (2020, April 3). In Wikipedia. https://en.wikipedia.org/wiki/Th%C3%A9r%C3%A8se_Desqueyroux_(novel)