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Was Marilyn Monroe Given Poison by Robert F. Kennedy?

Was Marilyn Given Poison by RFK?

Over the years, Marilyn Monroe has died from many causes. Enema, injection, intentional overdose, smothering and now poison. Well, that’s according to an “ultra-secret” document that states Robert F Kennedy, the brother of President John F Kennedy, murdered our Marilyn Monroe. 

TW: Death, suicide
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According to the VERY credible source, *ahem* Daily Mail, “LA policeman Mike Rothmiller has decided to reveal what he claims is an extraordinary truth: that secret documents he found in LAPD archives show that Marilyn Monroe was assassinated to protect the Kennedy clan.”  

The article states that Peter Lawford, a friend of Marilyn’s and brother-in-law to the Kennedys, was present whilst RFK gave Marilyn the poisonous drink. Lawford confessed everything to Rothmiller, twenty years after her death.

I won’t quote everything the article said, or even link it. I personally do not see the Daily Mail as a credible source of information. If you’d like to read what these claims are Google “Marilyn Monroe poisoned”. There you can read the story and how and why this secret is now revealed just a month before the anniversary of Marilyn’s death.

I will however, explain why this story is as ludicrous as Marilyn being abducted by aliens. Yes, that is a theory.


Was Marilyn Monroe given poison?

There are a few reasons why RFK couldn’t have been responsible for Marilyn’s death. And that can be explained simply by the fact that he was 350 miles from Los Angeles.


On the 3rd August 1962, Robert Kennedy had flown from Washington to meet his wife Ehtel, and children at his friend John Bates’s ranch in California (not far south from San Francisco). It was mentioned in the Los Angeles Times. The family had stayed there for the entire weekend before attending a convention of the American Bar Association on Monday 6th August.

There are photographs taken over the course of this weekend as well as multiple witness testimonies about how he didn’t leave the ranch the entire weekend. John Bates himself stated: “The attorney general and his family were with us every minute from the Friday afternoon until the Monday.”

Nancy Bates said that on the 4th August (the night Marilyn died) that “Dinner lasted until about ten-thirty and we were in our bedrooms not long after that.”

On Sunday 5th August, Bates and the Kennedys needed to leave early to get to Mass, in Gilroy (100 miles from Marilyn’s home), their attendance was reported in the paper the following day. After lunch, they drove to San Francisco where the family would stay during the convention.

An FBI file (77-51387-293) confirms this schedule of the attorney general and his family.

Where did the RFK rumours start?

On 3rd August 1962, Dorothy Kilgallen, a gossip columnist implied Marilyn was in a relationship. It is said Marilyn was with “a handsome gentleman who has a bigger name than Joe DiMaggio”. Dorothy had written another article about Marilyn before. This however had her excluded from several exclusives due to “her general hostility towards Marilyn.”

She wasn’t the only one . Walter Winchell was also cut off from several press releases due to comments he made about Marilyn. He additionally wrote articles implying a relationship with RFK in August 1962.

In 1964, Frank Cappell (friends with Jack Clemmons who investigated Marilyn’s death) wrote 70 pages booklet named The Strange Death of Marilyn Monroe. It was this document that implied Robert Kennedy was involved in Marilyn’s death for the first time.

He had announced that Marilyn’s murder was part of a communist conspiracy…

Cappell hated the Kennedys and along with Clemmons and another radical right-wing supporter named John Fergus, the three of them were indicted in 1965 for conspiracy of libel. The obsession to take down the Kennedy brothers, who they felt were soft on communism, left them to be known as unreliable sources of information. They made these accusations purely based on their hate for the Kennedys and nothing else.


Was Marilyn Monroe Given Poison by Robert F. Kennedy?
Marilyn and Peter Lawford, 1962

It is widely believed that Peter Lawford had seen Marilyn earlier on in the day on the 4th August when she went to his home and walked along the beach (as per instructions from Ralph Greenson).

Lawford called Marilyn later that day inviting her to dinner (he also invited Marlon Brando and Wally Cox but neither of them could attend). Marilyn had initially rejected the offer but he said he would telephone her to try and change her mind later on in the day.

Both Milton Ebbins and Milton Rudin had received calls from Lawford asking them to check on Marilyn. He also called Joe Naar at about 11 pm (who was invited to dinner too but didn’t go) to drop in and see if she was okay, as he lived just half a mile away. As Naar was dressing he was then called by Ebbins and told he had spoken to the housekeeper who said Marilyn was fine and it was best to leave her be as she needed rest.

Dinner guest, George Durgom (personal manager of Lawford and Jackie Gleason) and Lawford’s maid Erma Lee Riley all certify that he was home all evening.

How did the Lawford rumours start?

The rumours of Lawford being involved with Marilyn come from a man called Fred Otash.

Fred Otash

In the 1980s he made claims that he had tapes that proved Marilyn was murdered. It is said Bobby and that Peter Lawford helped “clean up” the scene. He had also professed he was a part of the Wrong Door Raid (which is definitely false). Otash was an ex-cop who had left due to being caught selling private and confidential information so, again, isn’t a trustworthy source of information. He then became a private investigator but had his licence revoked for false advertising and using the FBI director’s name and using the name United Nations.

Fred Otash

His California license was revoked and he then moved to New York. You can read his FBI files made public by clicking here.


It was very well known Marilyn had a red diary. Well only since Slatzer came up with that theory a decade after she died. It is well known to conspiracists and fans of Marilyn’s murder theory.


Marilyn Monroe and Robert Slatzer

Robert Slatzermet Marilyn once in 1952 whilst she filmed Niagara. They had a couple of photos together and since her death, he has been a plague to all researchers lives. Why? 

  • He insisted he married Marilyn on 4th October 1952 in Mexico. Apparently, they had the wedding certificate burnt as the studio didn’t want them to get married. However, on the date that he states they travelled (3rd) Marilyn is photographed at the Photoplay Awards in Los Angeles. There is also a cheque made out to Jax in Beverly Hills on the 4th October 1952. 
  • He states they were very close until she died despite the fact there are no photos other than those in 1952 or letters.
  • From Donald Spoto’s book:

    While filming scenes at Niagara Falls, [Monroe] was asked by a twenty-five-year-old visitor from Ohio named Robert Slatzer to pose with him for snapshots. For such impromptu photos and importuned autographs, no public figure was ever more generous and cooperative with admirers and strangers than Marilyn, nor was any more exploited before or since her death…

    In 1972, with Marilyn conveniently unable to contradict him, Slatzer approached journalist Will Fowler with a short, incomplete article in which Slatzer speculated that Marilyn Monroe’s death was part of a political conspiracy… “Too bad you weren’t married to Monroe,” Fowler said, unimpressed with Slatzer’s proposal. “That would really make a great book.” Soon after, Slatzer contacted Fowler again, saying he had forgot to mention that he had indeed been married to Marilyn.

    “Slatzer made a career of being a pretender,” according to Fowler, “selling gullible talk show producers who don’t do their research very well with the deception that he was married to Marilyn. He was never married to her. He met the star only once, in Niagara Falls… He never met Marilyn before or since.”… Among the most persistent but injudicious of his assertions is his absurd claim that he spent the weekend of October 3 to 6, 1952, with Marilyn Monroe in Tijuana, Mexico, where they were married on October 4… Quite apart from the fact that Marilyn was in Los Angeles that entire weekend, Slatzer could never produce a written record of the union or its dissolution.

Putting it simply, he’s a liar.

The red diary in which he alleges to have existed was meant to have contained many government secrets relating to the Kennedy’s. This is a falsehood that he made in 1975. He said Marilyn was going to reveal these secrets to the world if RFK ended their romance. According to Slatzer Marilyn also had recorded conversations with the president and attorney general. No one BUT Slatzer knew about this. But according to him, this is why the Kennedy’s had Marilyn murdered.

Robert Slatzer


Marilyn’s pills on her bedside table

The facts are Marilyn had 4.5 mg of Nembutal and 8.0 mg of Chloral Hydrate in her blood. She also had 13.0 mg of Nembutal in her liver. This is ten times the lethal dose. She would’ve passed out before it was fully absorbed but the liver would’ve continued absorbing the drugs until she died. Due to a slower metabolism as she was dying, the liver levels would be higher than the blood.

That is what killed her.

Whether she intentionally took a large amount of her medication in order to end her life or she was so fed up with not being able to sleep she took more than the advised dosage, will be a mystery forever. What isn’t a mystery is the fact that she had a deadly dose of her drugs in her system which she took before 8pm which correlates to Lawford calling Marilyn at 7:40/45pm.


Facts simply don’t allow this to be true.

  • Robert Kennedy wasn’t in Los Angeles at the time of Marilyn’s death, as recorded by the FBI, numerous journalists and witnesses who saw him that weekend.
  • The person who “witnessed” these events was at home and had planned a dinner party that evening. There were multiple calls made to Marilyn as well as statements from witnesses asserting that Lawford had been at home all night.
  • Marilyn took the medications she had been prescribed. She died due to taking too much of them in a short period. The autopsy reports do not show any reason to doubt what killed her. Drinking poison is not one of those reasons. You can see her prescriptions for the months leading up to her death in my FAQ.
  • The sources of information of Marilyn being murdered are unreliable, untrustworthy sources. This also includes Eunice Murray who changed her story several times.

    These people have released brand new “information” years after Marilyn’s death. There is no one to contradict their stories. And because rumour and speculation sell so well more and more fictitious tales have made headlines.

Marilyn Monroe seems to become more well known as a subject of a murder that never took place and as part of a range of conspiracies. All of these stories were released decades after she passed away. Rather than focusing on the celebration of her life, which is what MANY Marilyn fans attempt to do, stories like this destroy it. She is more famous for her death than any of the hardships she overcame and the successes she made in her life. I pray one day there will be a day where falsehoods about Marilyn, a human being, will end. In the meantime, whilst people keep believing fiction over facts, there is always a profit to be made and fame to gain. You can read a review of the book here by my friend April.

Sources: Donald Spoto’s Biography, Marilyn: A Day In The Life, PIMall, The Marilyn Monroe Encylopedia

Our Marilyn Monroe



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