In 1964, the partial remains of two black teenagers — Charles Moore and Henry Dee — were pulled from a backwater of the Mississippi River. Brutally murdered by the Ku Klux Klan, no one was ever convicted. In one of his first ever cold case investigations, Someone Knows Something host David Ridgen joins victim's brother Thomas Moore, as he returns to Mississippi 40 years later to discover the truth, confront the Klansmen involved, and find justice.