Princess Diana (1961-1997)

The world was devastated when Princess Diana passed away in 1997 in a Paris car accident. However, Diana felt that there was a plot to take her life and expressed her fears in a letter to her butler Paul Burrell 10 months before she died.

The text read: “[Someone is] planning 'an accident' in my car, brake failure and serious head injury in order to make the path clear for Charles to marry."