The Neighborhood by Mario Vargas Llosa
When a high-profile businessman is blackmailed by a notorious magazine editor, his comfortable life is threatened by the salacious expose. While attempting to field the scandal, the businessman's wife, seeking comfort, begins a secret affair with the wife of his best friend. Then the editor is found murdered, and the two couples have no choice but to descend into the murkiest depths of Peruvian society, while the magazine's staff embarks on its greatest revelation yet . . .