Maria Callas visited her longtime lover Aristotle Onassis on his deathbed in a secret meeting arranged so that his wife ...

Aristotle Onassis and Maria Callas 'couldn't live without the other one,' his longtime personal secretary Kiki Feroudi ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas ...

New details the most mysterious love triangles of the 20th century, that of Aristotle Onassis Maria Callas and Jackie Kennedy ...

Following the death of President John F. Kennedy, widow Jackie Kennedy remarried Greek businessman Aristotle Onassis in 1968, ...

There weren’t many people closer to Aristotle Onassis than Kiki Feroudi Moutsatsos, his personal secretary and loyal gatekeeper. It was Moutsatsos who arranged for many of the secret ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas Central Press/Getty; Ron Galella/Ron Galella Collection via Getty; Len ...

Aristotle Onassis and Maria Callas "couldn't live without the other one,” Kiki Feroudi Moutsatsos recalls Hulton-Deutsch Collection/CORBIS/Corbis via Getty Aristotle Onassis and Maria Callas When ...