Transcripts of apparent conversations between actress Marilyn Monroe and her psychiatrist have shed new light on her state of mind before she died in 1962.
Last week marked 43 years since Monroe died in August 1962
John Miner, who worked for the District Attorney's office in Los Angeles, says he made the transcripts as part of his investigation into Monroe's death.
Miner says they support his belief that Monroe was a victim of foul play.
The actress died of barbiturate poisoning in August 1962, aged 36. Her death was ruled a probable suicide.
Miner claims he took "extensive" and "nearly verbatim" notes from tapes that were played for him by Monroe's therapist, Dr Ralph Greenson.
Yet questions have been raised as to the authenticity of the transcripts.
Miner, 86, maintains the original tapes have probably been destroyed, which means his claims cannot be verified.
The former prosecutor was interviewed when prosecutors re-examined Monroe's death in 1982, but did not reveal he had the transcripts because of promises to Dr Greenson.
At the time, prosecutors decided there was insufficient evidence to warrant a new criminal investigation.
The Los Angeles Times, which published excerpts from the tapes on Friday, said Miner was allowed to hear the tapes on condition he never revealed their contents.
He broke his promise after Dr Greenson's death, when some Monroe biographers suggested the doctor might be considered a suspect in her death.
Conspiracy theorists continue to dispute the circumstances of Monroe's tragic death.
Miner claims there was "no possible way" the actress could have killed herself, adding she had "very specific plans for her future".
The transcripts reveal she was fascinated with the idea of Shakespeare, and was determined to effect a career change.
"I feel certain I'll win an Oscar for one or more of my Shakespeare women," the transcript reads.
Monroe also described a sexual liaison with actress Joan Crawford, her failed marriages to baseball player Joe DiMaggio and playwright Arthur Miller, and gave a frank assessment of her physical attributes.
The transcript also strongly suggests an involvement with Robert Kennedy, brother of her alleged lover President JF Kennedy.