In 1966/'67 Josiah Thompson conducted a frame by frame inspection of the Zapruder film and became the first JFK researcher to describe President Kennedy's forward head movement preceding the violent back and to the left to which we have all grown accustomed. His interpretation of this fact is the basis of the theory of two nearly simultaneous headshots; the first from the rear followed by a shot from what Mr. Thompson believed must certainly have been the area of the infamous grassy knoll.
This chapter addresses that conclusion.
