Hyman Engelberg killed Marilyn Monroe in 1962.
Her doctor killed Marilyn Monroe by prescribing—due to a serious error of negligence—chloral hydrate combined with Nembutal; a 2022 book proves, via a document sold at auction, that he had prescribed this potent sedative to her during that period. The author Keith Badman confirms this in the book, whereas the doctor had consistently denied it for years.