Tomorrow night, ABC broadcasts The Last Days of JFK Jr., a new documentary. My voice is in the trailer, so I suspect I’ll be in the show, talking about my two cover stories on the American prince. The first was for New York Magazine in 1989 and appeared as the man I called “Just John” was going to work for Manhattan District Attorney Robert Morgenthau. The second, for Esquire in 1995, caught up with John as he launched his political magazine George. Like his death, that mag, which sat at the intersection of politics and celebrity, came too soon.