A wall divides Berlin. All telephone lines between East and West have been cut. Except for one as Jack Fleming finds out. From a telephone booth on Potsdamer Platz one can speak to East Berlin. A mysterious Herr Teltow, high ranking East German intelligence person, warns Fleming that a killer is waiting for President Kennedy. JFK will visit West Berlin on the 26th of June 1963. Fleming will accompany the president as his Berlin advisor. Kennedy dismisses his warning: "Nonsense, a killer does not exist." We meet "Angel," the killer who does not exist. "Nobody knows his face," Don Ricardo said. "There are no fingerprints. There are no records. There is nothing to pin him down. He came to collect the lethal device I developed for him. Soon someone will die."