The host visits New Orleans to investigate the case of Marie Delphine LaLaurie, a prominent 19th-century socialite accused of torturing and murdering dozens of her slaves. Also examined: the Danziger Bridge shootings, which resulted in the deaths of two civilians in the aftermath of Hurricane Katrina, and the police cover-up that followed; and the story of Mark Essex (1949-73), aka the New Orleans Sniper.