It's Friday, June 19, 1953. Ted Hall, a 28 year-old biophysicist from New York, and his wife, Joan, 24, are driving to a dinner north of the city. The road takes them past Sing Sing Prison. Joan Hall remembers, "As we drove by, the sun was setting. ... It was large over the river going down." At the same time, inside Sing Sing, Julius and Ethel Rosenberg were being executed in the electric chair–the only Americans ever to die for conspiracy to commit espionage.