A New York Times Bestseller -- In the four years Clint Hill was the Secret Service agent assigned to guard the glamorous and intensely private Jacqueline Kennedy, he went from reluctant guardian to fiercely loyal watchdog and, in many ways, her closest friend. Looking back fifty years, Hill tells his story for the first time -- a tender, enthralling, and tragic portrayal of a man doing the most exciting job in the world, with a woman the world loved, and the tragedy that ended it.