“IT WAS A QUEER, SULTRY SUMMER, the summer they electrocuted the Rosenbergs … ” So goes the opening sentence of Sylvia Plath’s 1963 novel The Bell Jar, referring to the Jewish American couple, Julius and Ethel Rosenberg, who were convicted of conspiracy to commit espionage and sent to the electric chair exactly 68 years ago today. Their execution casts a morbid shadow over Plath’s book, just as it did over the United States, and it is seen by many as the nadir of America’s engagement with the cold war. The Rosenbergs are still the only Americans ever put to death in peacetime for espionage, and Ethel is the only American woman killed by the US government for a crime other than murder.