A new episode of the CNN Original Series “How It Really Happened” spotlights the terrifying anthrax attacks that followed Sept. 11, 2001, taking viewers inside one of the largest investigations in FBI history. It premieres Sunday, May 5 at 9pm ET/PT.A new episode of the CNN Original Series “How It Really Happened” spotlights the terrifying anthrax attacks that followed Sept. 11, 2001, taking viewers inside one of the largest investigations in FBI history. It premieres Sunday, May 5 at 9pm ET/PT.
