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

"Sometimes you don’t have the opportunity to discuss [those topics] your sons," says the actress, who portrays Maria Callas ...

Kennedy, widow Jackie Kennedy remarried Greek businessman Aristotle Onassis in 1968, and while Kennedy stayed with the tycoon ...

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

Opera singer Maria Callas had a years-long relationship with businessman Aristotle Onassis. His sudden marriage to Jacqueline ...

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

Jolie, whose combination of artistry and larger-than-life stardom makes her the only actress who could play this part right ...

Maria also takes a look into the late opera singer's romantic life, where she had a volatile, years-long affair with ...

Angelina Jolie prepared for her role in the self-titled Maria Callas biopic by having constructive conversations with her ...