For 25 years William Noonan and John F. Kennedy, Jr. were best friends. Sharing an adolescence in Hyannisport, Massachusetts, the two frequented beach bonfires and the Monday-night yacht-club dances, took road trips, shared albums, sneaked cigarettes on the widow's walk of John's house, and scored beer together. And as they grew older, John and Billy never lost the connection they forged in the Kennedy compound as two young boys who had both tragically lost their fathers.