Erik Larson is probably the most successful popular historian working today. His books, which include “The Devil in the White City” and “The Splendid and the Vile,” have sold a staggering 12 million copies. His latest, “The Demon of Unrest: A Saga of Hubris, Heartbreak, and Heroism at the Dawn of the Civil War,” debuted at No. 1 on the New York Times bestsellers list this week. It’s a gripping account of the five months between Abraham Lincoln’s election and the outbreak of the Civil War — a 163-year-old chapter in our history that Erik says is alarmingly relevant.Host: Caleb BissingerGuest: Erik Larson

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