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

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

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

Jon Collins-Black, the author, has hidden more than $2 million worth of treasure in chests across the country. The treasures ...

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

The treasures include a variety of items, such as gold, rare Pokémon cards, sports memorabilia, and even a brooch once owned ...

What does it take to channel the spirit of Jacques Cousteau and search for secret treasure?For Jon Collins-Black, this ...

Jon Collins-Black is the author of “There’s Treasure Inside," which gives hints to readers to help them find the more than $2 ...

Is this the plot of the next season of "Outer Banks?" An author wrote a book that will lead readers to five treasure chests ...

Pierre Cardin designed Greece's Olympic Airways flight attendant uniforms that made fashion history in the glory days of the ...