Marilyn Monroe, the most enduring sex symbol, died 52 years ago on August 5, 1962 when she was 36. During her famous days, she allegedly had affairs with President of the USA, John. F. Kennedy, Robert Kennedy and Marlon Brando and she was married three times.

The cause of her death is still unknown, but it’s officially classified as a “probable suicide,” since her housekeeper found her lying naked in bed with an empty bottle of sleeping pills by her side.

There are thousand of theories about her death while the most recent version is the one written by Jay Margolis and Richard Buskin. In their book, “The Murder of Marilyn Monroe: Case Closed”, argue that Marilyn was murdered by Robert F. Kennedy and her psychiatrist Dr. Ralph Greenson to silence her because she was about to reveal all the dirty secrets of Kennedy family that she kept in a little red diary.

No matter what the truth is, Marilyn Monroe continues to intrigue and surprise us with her unknown aspects of life.

See the photos taken by her personal photographer George Barris just one month before she died.