Do you think lady Di was killed or do you think it was a simple accident? Twenty years post-mortem she is still as intrigueing as back then. I personally think she was killed by the English monarchy. MI6 was in Paris, the night of Diana's car crash. That is revealed by a book of the Russian writer Sokolov. Paul Burrell, Diana her butler, also revelead a letter written in October 1996 by the princess herself, saying that this was a dangerous phase in her life.