Zone 7Posts Tagged “Zone 7”1 post🇺🇸BookMay 11, 2026Cold Case of a Serial Killer's Daughter Solved in New True Crime BookAmerican investigator and podcaster Sheryl 'Mac' McCollum publishes 'Swans Don't Swim in a Sewer' on May 12, 2026, documenting how she solved one of Georgia's most disturbing cold cases — a case involving a serial killer's daughter and a misidentified skull.Sheryl McCollumFlint River KillerZone 7+4
