# Marilyn Monroe was murdered and her death covered up, not a probable suicide

**No verdict.** Marilyn Monroe died of acute barbiturate poisoning and the Los Angeles County coroner ruled it a probable suicide. The scene was handled sloppily and real anomalies remain, which is why suspicion has never faded. But the specific claim rated here, that she was murdered and the truth concealed, has never been established: a 1982 Los Angeles County District Attorney review found no credible evidence of homicide and no basis to reopen the case, and no named person has been shown to have killed her.

Category: Unsolved Crimes & Disappearances · Era: 1960s · First circulated: 1962
URL: https://theconspiratory.com/theory/marilyn-monroe-death

## Summary
On the night of 4 August 1962, the actress Marilyn Monroe died at her Los Angeles home at age 36. The county coroner ruled the cause acute barbiturate poisoning and the manner a probable suicide. Almost immediately, a counter-story took hold: that she was murdered, often tied to alleged affairs with President John F. Kennedy and Attorney General Robert F. Kennedy, with the CIA, FBI, or organized crime variously implicated, and the evidence tidied away. This case file separates what is documented (a lethal overdose, a genuinely botched death scene, and unanswered forensic questions) from the central claim (that she was killed and it was hidden), which after more than sixty years and an official review remains unproven.

## The claim
That Marilyn Monroe did not take her own life but was deliberately killed on 4 August 1962, that her death was staged or reworked to look like a barbiturate suicide, and that police, the coroner, and federal agencies concealed the truth to protect powerful people she was allegedly involved with, most often named as the Kennedy brothers.

## Origin and timeline
- 1962-08-05: In the early hours, Monroe is found dead in the bedroom of her home on Fifth Helena Drive in Brentwood. Her housekeeper Eunice Murray and psychiatrist Dr. Ralph Greenson are present; police are called at about 4:25 a.m. Deputy medical examiner Dr. Thomas Noguchi performs the autopsy that day and finds no anatomical cause of death, sending tissue for toxicology.
- 1962-08-17: Los Angeles County Coroner Theodore Curphey announces the findings after a psychiatric 'Suicide Prevention Team' review: the cause of death is acute barbiturate poisoning from an overdose, and the manner is a probable suicide. Toxicology reports fatal levels of pentobarbital and chloral hydrate.
- 1964: Anti-communist writer Frank Capell publishes the pamphlet 'The Strange Death of Marilyn Monroe,' one of the first to allege she was murdered and to tie the death to Robert Kennedy. It seeds a theory that grows through the late 1960s and 1970s.
- 1973–1974: Norman Mailer's bestselling biography raises the possibility of foul play, and Robert Slatzer, who claims to have been close to Monroe, publishes a book pressing the murder-and-cover-up case. The Kennedy connection moves from fringe pamphlets into mass-market print.
- 1982: Prompted by renewed press claims, the Los Angeles County District Attorney, John Van de Kamp, orders a threshold review. Assistant DA Ronald 'Mike' Carroll and an investigator spend months on it and conclude there is no credible evidence of murder and no basis to open a criminal investigation, while conceding factual discrepancies remain.
- 1985: Anthony Summers's biography 'Goddess' and a BBC documentary revisit the Kennedy allegations and the disorder of the original inquiry, keeping the murder theory in wide circulation and drawing sharp disputes over its sourcing.
- Ongoing: Later biographies, documentaries, and the 2012 reprocessing of Monroe's FBI file continue to feed the debate. No release has produced evidence of a killing, but none has fully dispelled the anomalies either, and the probable-suicide ruling still stands.

## The evidence, claim by claim
- Claim: The death scene and the original investigation were a mess, which is exactly what a cover-up would look like.
  Evidence: The sloppiness is real, and it is the strongest fuel for doubt. Accounts of the timeline that night conflict, the housekeeper Eunice Murray gave shifting versions over the years, and the crime scene was not treated with the rigor a suspicious death would get today. But disorder is not the same as concealment. The 1982 District Attorney review examined these discrepancies and attributed them to a rushed, poorly documented 1962 investigation and the passage of time, not to a homicide being hidden. A bungled inquiry lowers confidence in the paperwork; it does not by itself show that anyone was killed.
- Claim: There were no pills in her stomach, and the coroner disposed of the organ samples, so an oral overdose was never really proven and an injection was covered up.
  Evidence: Noguchi did note the absence of visible capsule residue and yellow dye in the stomach, and specimens that could have settled the question were discarded by the toxicology lab before further testing, which is a genuine failure. Yet the toxicology that was done found fatal barbiturate levels in the blood and liver, consistent with a swallowed overdose that had time to absorb. Noguchi, who looked for needle marks, reported finding no fresh injection site. The missing samples leave a real gap, but a gap is not proof of a hidden injection; it is an unanswered question the record cannot now close either way.
- Claim: Monroe's alleged relationships with John and Robert Kennedy gave powerful people a motive to silence her, and agencies helped bury it.
  Evidence: That Monroe had contact with the Kennedys is documented in part, and the theory leans on Robert Kennedy's reported presence in California that weekend. But motive and proximity are not evidence of a killing, and the specific claims (that RFK was at the house, that a murder was staged, that the FBI or CIA sanitized the scene) rest on later, contested testimony rather than physical proof. The FBI file released through its Vault shows surveillance interest in Monroe's politics and associations, not any record of involvement in her death. No document has surfaced showing any named official ordered or concealed a homicide.
- Claim: An official body actually re-examined the case, which shows the doubts were serious.
  Evidence: True, and the outcome cuts against the murder claim rather than for it. The 1982 review by the Los Angeles County District Attorney was a real, months-long inquiry that read the files, re-interviewed where it could, and weighed the conspiracy literature directly. Its conclusion was that the evidence was consistent with the coroner's probable-suicide finding, that the anomalies did not amount to proof of foul play, and that there was no legal basis to reopen. It acknowledged loose ends without treating them as a hidden crime, the same distinction this file draws.

## Why people believe it
- The original investigation really was careless. When the paperwork on a famous death is thin, the timeline is contradictory, and key samples are thrown away, the gaps invite the darkest reading, and here the gaps are documented rather than imagined.
- The people in her orbit were powerful enough to make a cover-up plausible in the abstract. Alleged ties to a sitting president and his attorney general brother give the story a motive and a cast that a lonely overdose lacks, even without proof any of them acted.
- It refuses to accept a random, private ending for a public icon. A woman at the center of American glamour dying alone of an overdose feels arbitrary; a murder gives the loss a shape, a reason, and someone to blame.
- The era earns the suspicion. The 1960s later produced real, documented abuses by the FBI and CIA, so the assumption that agencies would lie about a sensitive death is not paranoid on its face, even where the specific evidence is absent.
- Each partial disclosure keeps it alive. Newly opened FBI pages and fresh coroner interviews arrive periodically and answer some questions while raising others, so the case never feels closed and the sense of withheld truth renews itself.

## Open questions
- Why were the stomach and intestinal samples discarded before a full analysis could rule out how the barbiturates entered her body? The loss is documented and never satisfactorily explained, and it forecloses the one test that might have distinguished a swallowed overdose from another route.
- How should the conflicting accounts of that night be reconciled? Eunice Murray and Dr. Ralph Greenson gave versions that shifted over the years, and no single agreed timeline of when Monroe was found, when doctors arrived, and when police were called has ever been fixed.
- What exactly was the extent of Monroe's contact with the Kennedys in her final weeks, and does any of it bear on the death? The relationships are partly documented and partly asserted, and the line between them has never been drawn cleanly in the public record.
- Why was the 1962 investigation conducted so loosely for so prominent a death? Whether the shortcomings reflect ordinary period practice and haste, or something more, is a question the surviving records cannot now resolve.

## Sources
- 1982 Investigation Into the Death of Marilyn Monroe: District Attorney Files, The Marilyn Monroe Collection (archive of the Los Angeles County District Attorney review) (1982): https://themarilynmonroecollection.com/marilyn-monroe-1982-death-investigation-report/
- Marilyn Monroe Autopsy Report, Los Angeles County Chief Medical Examiner-Coroner (Case No. 81128), Autopsyfiles.org (1962): https://www.autopsyfiles.org/reports/Celebs/monroe,%20marilyn_report.pdf
- FBI Records: The Vault, Marilyn Monroe, Federal Bureau of Investigation (2013): https://vault.fbi.gov/Marilyn%20Monroe
- No evidence Marilyn Monroe murdered, D.A. says, United Press International (UPI Archives) (1982): https://www.upi.com/Archives/1982/12/29/No-evidence-Marilyn-Monroe-murdered-DA-says/1635409986000/
- Ronald Carroll, headed review of Monroe's death, dies, Portland Press Herald / Associated Press (2010): https://www.pressherald.com/2010/10/09/ronald-carroll-headed-review-of-monroes-death_2010-10-09/
- The Marilyn Tapes, CBS News (2005): https://www.cbsnews.com/news/the-marilyn-tapes/
- Goddess: The Secret Lives of Marilyn Monroe, Anthony Summers, Macmillan (1985)
- Coroner, Thomas T. Noguchi with Joseph DiMona, Simon & Schuster (1983)

Rated by The Conspiratory, a neutral, sourced encyclopedia of conspiracy theories. Full page: https://theconspiratory.com/theory/marilyn-monroe-death