Who they were
Marilyn Monroe was found dead at her Los Angeles home in August 1962. Her death was officially attributed to acute barbiturate poisoning and classified as a probable suicide.
Inside the story
Spoiler warning — this section reveals what happens to Marilyn Monroe in the Utopia Series.
Marilyn Monroe knows information concerning Utopia, making her dangerous to the Kennedy brothers. Marilyn Monroe is invited to Cal-Neva Lodge by Frank Sinatra for a weekend. Marilyn Monroe is staged to die by Body double, medication bottles, and scene manipulation to suggest suicide. Marilyn Monroe disappears to Utopia after her apparent death is staged. Marilyn Monroe takes to Apartment 19, a luxurious property overlooking the ocean. Marilyn Monroe has romantic/sexual relationship with John F. Kennedy, giving her access to classified information. Marilyn Monroe has romantic relationship with Robert Kennedy and overhears him discussing Utopia with Hughes. Marilyn Monroe is under pressure from both political figures and organised crime, including Sam Giancana.
Further reading
From the Utopia Files: The Enigma of Marilyn Monroe's Death.