Unraveling the Lusitania’s Century-Old Mystery

Off the Irish coast, the wreck of the luxury liner Lusitania rests on the seabed. Torpedoed by a German submarine during World War I, the ship sank, killing nearly 1,200 people. More than a century later, key details about the sinking remain unclear and disputed. Reporter Martha Teichner re-examines the catastrophe and the lingering questions surrounding its cause and consequences.