An illustration of Fort Sumter in flames appears on the cover of best-selling author Erik Larson’s latest book, The Demon of Unrest: A Saga of Hubris, Heartbreak, and Heroism at the Dawn of the Civil War (Crown, April 2024). This month, the author—best known for The Devil in the White City (Knopf Doubleday, 2004)—visits the harbor city where much of his most recent book is set for a talk with readers hosted by Buxton Books. The Demon of Unrest focuses on the five months after Lincoln was elected president to the first shot of the Civil War on April 12, 1861. Larson researched diaries, secret communiques, plantation records, and ledgers of enslaved people to inform the narrative, which centers on Lincoln, Secretary of State William Seward, Fort Sumter commander Robert Anderson, secessionist Edmund Ruffin, and diarist Mary Boykin Chestnut. Gaillard Center, 95 Calhoun St. Thursday, 7:30 p.m. $35-55. (843) 242-3009, www.gaillardcenter.com