The Crown isn’t a show known for violent deaths—rather, in the rarefied inner circle of the British monarchy, death by icy glare or withering remark is the most likely way to go. But in Season Four, that changes forever, with the violence and discontent running rampant in the Queen’s realm finally hitting closer to home. In the Season Four premiere, Lord Louis Mountbatten, affectionately known to the royals as “Uncle Dickie,” is assassinated at sea by members of the Irish Republican Army. The shocking loss sends the royals reeling—and touches on The Troubles, a decades-long ethno-nationalist conflict addressed only fleetingly in The Crown.