The recent publication of a book called “The Secret Letters” has sparked renewed interest in the death of Marilyn Monroe.

The book claims that the Hollywood star was murdered in 1962 by the American mafia.

It is suggested that Jimmy Hoffa, an American union leader, and Sam Giancana, a Chicago mafia boss, were behind the murder.

At the time, they were being investigated as part of a crackdown on organized crime ordered by Robert Kennedy, the then US Attorney General.

According to the book, mafia hit-men gave Monroe an enema with deadly drugs to hide their tracks by leaving no trace of the pills in her stomach.

It is claimed that Hoffa and Giancana were angered by the Kennedys’ decision to wage war on the mafia after the organization had helped to ensure victory for John F. Kennedy in his campaign to become President.

This theory contradicts the initial official report that stated Monroe’s death was a suicide caused by barbiturates.

Wendy Leigh, the author of the book, spent three years researching the case using forensic evidence and government documents.

The book alleges that the mafia used chloral hydrate, a hypnotic drug, as their pharmaceutical murder weapon of choice.

This drug was reportedly found in Monroe’s blood during the autopsy.

Leigh claims that the drug was also used in a number of underworld killings the previous year. Monroe’s autopsy showed that she had taken enough Nembutal and chloral hydrate to kill 15 people. However, no trace of tablets was found in her stomach.

This led to the suspicion that the drugs were administered to her as an enema.

John Miner, who was head of the Los Angeles District Attorney’s medical-legal section and attended Monroe’s autopsy, believes that an enema is the most likely explanation.

He said, “If you wanted to kill someone, an enema would leave no residue in the stomach. Noguchi and I were convinced this was absolutely the route of admitting the fatal dose.”

The initial investigation was hampered by the disappearance of tissue and other bodily samples that had been sent to a toxicology lab for analysis.

Hoffa and Giancana, the two men who could conclusively answer the riddle, are both dead.

Hoffa disappeared in 1975, presumed murdered by the mafia. Giancana died the same year, the night before he was due to testify about his relationship with the Kennedys.

The path that led to Monroe’s murder began some 30 years earlier when Joe Kennedy, head of the Kennedy clan, had been a partner of the notorious mafia boss Frank Costello in a bootlegging operation during Prohibition in the 1930s.

Decades later, when John F. Kennedy decided to run for the White House, it is claimed that his father again called on the Cosa Nostra for help to buy votes.

However, the Kennedys’ relationship with the mafia soon turned sour when Robert Kennedy became Attorney General and decided to crack down on organized crime.

Hoffa, the boss of the powerful Teamsters truckers’ union, and an extortionist with close links to organized crime, was already a sworn enemy of Robert Kennedy.

In 1962, both under investigation by the Justice Department at Kennedy’s behest, Giancana and Hoffa joined forces to solve their problem.

FBI records from the time reveal a conversation between Hoffa and one of his associates during which he said, “Somebody has to bump that son of a bitch off. You know, he drives about in a convertible and swims by himself. It would be easy to get him with that. But I’m leery of it. It’s too obvious.”