In the first of three programmes, John Slater returns to the story he first uncovered a few years ago. In November 1993, the United States was shaken by revelations that, during the Cold War, hundreds of citizens had been given heavy doses of radiation in secret experiments. After the story was broken by the Albuquerque Tribune in New Mexico, a presidential inquiry was set up and its findings have just been published. The families of the victims are also seeking justice in the courts. (Repeat)