【明報專訊】This week, historian David Eisenbach continues to delve into (深入) the shadowy and little-known lives of some of history's most renowned (聞名) figures in Things You Don't Know About. He uncovers hidden truths about John F Kennedy (JFK, 甘迺迪), the 35th President of the United States. JFK was a hopeless romantic and secret courier (信差) in Nazi Germany.