Dr. Joseph Fitzgerald , a Harvard University professor of history , has travelled back in time from the year 2172 and has assumed the identity of an instructor at Harvard , where he has now been teaching since 1961 . In 1963 , Fitzgerald is visited by Dr. Kate Wang , a colleague from his own time . They discuss his mission , which is to observe the assassination of John F. Kennedy , from whom he is descended
assassination
Assassination of John F. Kennedy
Profile in Silver