Marilyn also spoke with her hairdresser, Sidney Guilaroff, at about 8:30 p.m. Guilaroff claimed that she said she knew a lot of dangerous secrets about the Kennedys. She received several more phone calls that evening, including one to her part-time lover Jose Bolanos. Bolanos claimed that Marilyn revealed, "something shocking to him that would shock the whole world" in a phone call at about 9:30 p.m. During the conversation, Marilyn laid down the phone without hanging up because she heard some kind of disturbance at her door. He never heard from her again.

Marilyn to the mortuary Sunday morning between 5:30 and 6:00 a.m., he noticed that "rigor mortis was advanced" and estimated that she had died between 9:30 and 11:30 p.m. Saturday night. Eunice, however, claimed that she woke up around 3 a.m., saw a light under her bedroom door (which later proved impossible because of deep-pile carpeting), found the door locked (also impossible since there was no functional lock on the door) and called Dr. Greenson. Greenson came to the house, got into the bedroom and around 3: 50 a.m. declared that Marilyn was dead.

The events that occurred between 9:30 and 10:30 p.m. remain a mystery. However, evidence suggests that sometime during that unaccounted hour Marilyn died. Based on recent testimony by acquaintances and people involved with the events surrounding the alleged suicide, Anthony Summers placed the time of her death somewhere within that time frame that evening. Testimony by four of Marilyn's friends supports this theory.

Donald Wolfe reports that Eunice and son-in-law Norman Jeffries were at Marilyn's house during the night of her death. The two had conflicting stories concerning the events that took place that evening. Jeffries claimed that, between 9:30 and 10.00 p.m., Robert Kennedy and two unknown men came to her door and she ordered them to leave the house. According to Jeffries, they went to a neighbour's home and waited until the men left around 10:30 p.m. When they returned home, Jeffries stated that he saw Marilyn laying face down, naked in her bed and holding what appeared to be a phone.

Jeffries said that Marilyn looked as if she were dead. Eunice allegedly called for an ambulance and then called Dr. Greenson. Jeffries saw Lawford and Pat Newcomb arrive at the house. They were in a state of shock and hysterical. A former ambulance driver named Ken Hunter told an investigator for the DA that he arrived at her home "in the early morning hours" following the discovery of her body. The ambulance company chief also told the investigator that she was in fact in a coma when the ambulance arrived, due to an overdose of sleeping pills. He claimed that she was taken to Santa Monica Hospital, where she passed away. Summers suggests that Marilyn's body was returned to her home in order to facilitate the ongoing cover-up.

Another witness account supported Jeffries' story, but it was never included in the records of the investigation into Marilyn's death. Elizabeth Pollard, a neighbour of Marilyn's, told police that she saw Robert Kennedy with two unidentified men approach her house at about 6 or 7 p.m. One of the unidentified men was carrying a black medical case. Pollard's story was discredited by police and omitted from the investigation because they claimed her story was an "aberration." On the tapes from the night of her death, you hear Peter, Marilyn and RFK talking and then fighting, with Peter acting as referee. There is a struggle that indicates that Marilyn was dead when RFK left. The phone then rings, someone picks it up and says nothing. Marilyn was found with the phone in her hand, which means that someone attempted to create a phone record, to prove that she was still alive but not in the state to talk, in order to clear RFK perhaps.

The Kennedys never blamed themselves for her death, they blamed Peter, who became a symbol of all that had gone wrong regardless of the fact that it was RFK and JFK that caused it.

Joe DiMaggio arranged for his ex-wife's funeral, barring Sinatra and the rest of Hollywood from the service, and sent roses to her grave three times a week for the next 20 years.