The Mitford Trial by Julian Fellowes

Set in interwar Britain, the novel follows a prominent aristocratic family when a shocking killing sparks a sensational courtroom battle that lays bare long-buried rivalries, illicit affairs and simmering resentments; as the trial plays out under the glare of public attention, loyalties fracture and secrets are dragged into the open, exposing the hypocrisies of privilege and the social changes reshaping a society on the brink of modernity.