Alan Gauthreaux and Daryl Hippensteel will discuss their new book, “Dark Bayou: Infamous Louisiana Homicides,” when the Algiers Historical Society meets from 10 a.m. to noon Saturday in the first-floor meeting room of the Algiers Regional Library, 3104 Holiday Drive, New Orleans.

Hippensteel is an assistant professor of criminal justice at Delgado Community College, and Gauthreaux is a freelance writer. Don Costello is president of the Algiers Historical Society, which meets the third Saturday of each month, except December. Its meetings are free and open to the public. For information, visit www.algiershistoricalsociety.org, or email algiershistory@yahoo.com.