Satanás by Eduardo Mendoza

In Bogotá, three seemingly separate lives—a traumatized English teacher slipping into paranoia, a painter ensnared by a dangerous muse, and a devout housekeeper whose unexpected windfall attracts ruthless swindlers—unfold in parallel, their choices driven by loneliness, desire, and resentment; as their paths cross, the city’s moral decay and social inequality surface, culminating in a devastating act of mass violence that reveals how ordinary lives can tip into horror.