Months after JFK's assassination, former first lady Jackie Kennedy talked on tape about their secrets. The tapes may soon go public. JFK was well-known as a philanderer. But the tapes reveal Jackie also had affairs with film star William Holden and Fiat tycoon Gianni Agnelli. Her affairs were in retaliation for his infidelitiesand annoyed him greatly. However, perhaps the most explosive revelation is that Jackie said she believed JFK's VP Lyndon Johnson masterminded his assassination. Despite their personal indiscretions, the Kennedys enjoyed a sparkling image during their lifetime. Modern politicians are not so lucky.