Half a century after the assassination of President John F. Kennedy, someone is killing people on the streets of New York City and leaving behind a bizarre calling card of that tragic day in Dallas. Discredited newspaper reporter Gil Malloy breaks the story of the link between seemingly unconnected murders --- a Kennedy half dollar coin found at each of the crime scenes. At the same time, a man emerges who claims to be the secret son of Lee Harvey Oswald and says he has new evidence that Oswald was innocent of the JFK killing.