Great mysteries grow intertwined By Randy Davidson When W. Mark Felt revealed Tuesday that he was "the man they called Deep Throat," it solved one of the greatest mysteries of my lifetime. As ghosts from the Watergate era — some of whom hadn’t been public figures for more than 30 years — made their way to TV news shows this past week — I couldn’t help wonder what amazing riddle would be unraveled next. There were some great mysteries during the 20th century. Many involved missing persons — from Amelia Earhardt to Judge Crater to Jimmy Hoffa. But there was...