The myth of Marilyn: Marilyn Monroe biography
While filming The Misfits, in 1961, Marilyn was hospitalized for depression, brought on by her divorce from Arthur Miller and two miscarriages, as well as her dependency on drugs and alcohol. She voluntarily entered the Payne Whitney Psychiatric Clinic.
In 1962, Marilyn began work on Something's Got to Give. It would be her last movie.
It was at this time that Marilyn attended John F. Kennedy's birthday celebrations and gave the sultry rendition of "Happy Birthday Mr. President", dressed in what was the most expensive dress in the world at the time. Many rumours circulated about a possible affair, not only between the actress and the president but also with his brother Robert Kennedy.
Physically and psychologically exhausted, Marilyn was unable to finish Something's Got to Give and withdrew to her home.
She was found dead on the night of 4th - 5th August 1962, at the age of 36. Police concluded that it was suicide but muder theories have never died down.