In the late 1950s, Nikita Kruschev visited the USA and in a speech made in Salt Lake City, Utah included an ad-lib remark, I would like to see your secret Chemical Warfare facility, at Dugway Proving Ground; the place where you keep the Nazis. President Dwight Eisenhower was incensed at Kruschev’s remark that seemed to indicate secret knowledge. Ike concluded that the military and the FBI might be hiding something about war criminals. Eisenhower charged the CIA to covertly investigate the situation. In a flashback, a German Military Intelligence officer in WWII visits Sobibor Extermination Camp in Poland. He encounters three SS Research scientists experimenting with a new nerve gas. After the war, the German officer becomes a contract CIA agent. FBI, Military Intelligence, and the KGB are all interested in the possible existence of Nazi war criminals employed by the US government. The three German ex-Nazis are murdered and their bodies disappear. GI engineers associated with the research seek the killers for their own protection during their military years and later ponder the identification of the murderer in civilian life.