6. Her alleged relationships
It is also assumed that Monroe was killed by John F Kennedy or Robert Kennedy, with whom she had alleged relationships. Several theories regarding her death claims that she was killed by the Kennedys because they feared that she would make their love affairs public along with other government secrets that she was gathering and was considered a communist spy. She was found to possess a diary in which she kept records of all the informations she gathered while she overheard the Kennedys speak. Interesting!