Episode One: Family Ties J.Q. Adams B. Harrson, F. Roosevelt, Kennedy. The last thing that the Founding Fathers envisioned was a hereditary chief executive. After all, they had fought a war in part to rid themselves of a king. Yet, power inevitably passes from generation to generation, and several families have returned to the White House as though born to it. The stories of the four men profiled in this hour reveal both the blessings and the curses of inherited power. Episode Two: Happenstance Tyler, Fillmore, A. Johnson, Arthur, Truman. Nearly one in five American presidents has died in office. The vice presidents who succeeded then were often chosen for the ticket less because they were equal to the most powerful office in the land than because they provided some electoral advantage. What happens when such a man takes office--frequently facing widespread conviction that he is unworthy of the powers he inherits?