Jonah Shacknai, the California millionaire whose son died in an accident and whose long-time girlfriend, Rebecca Zahau, died in a mysterious hanging, has asked the California attorney general to review the investigation of their deaths.
Further investigation would be helpful in "bringing some clarity, dignity, and ultimately closure to the devastating deaths," Shacknai wrote in a letter sent to the attorney general Monday and obtained by ABC News.
"The circumstances of Rebecca's suicide were so unusual and upsetting that it was difficult to accept the hard facts that were presented."
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Zahau, 32, was found hanging from a balcony in Shacknai's Coronado, Calif., mansion July 13. She was found nude with her wrists and feet bound with red rope. She allegedly scrawled black paint in a nearby bedroom: "she saved him can you save her."
Shacknai's 6-year-old son, Max, died from injuries sustained after falling down the stairs. His death was ruled an accident.
Zahau was babysitting Max when he tumbled down the stairs on July 11. Mary Zahau, her sister, said she called her soon after it happened.
"She said, 'I was in the bathroom and I heard this loud crash,'" Zahau said. "And she said, 'I came out and saw that Max was -- Max was on the floor. She sounded upset, but not frantic, not hysterical."
Mary's husband Doug Loehner said he spoke to Rebecca Zahau the next day when the little boy was in critical condition at the hospital.
"I told her like, you know, it's not your fault, you know, don't blame yourself," he said. "And she's like, no, I don't, I don't. I just have to be there for Jonah. She was upset, but she wasn't...she didn't blame herself."
Investigators concluded that Rebecca Zahau took her own life two days after Max's fall, saying she was riddled with guilt about his injuries and knowledge that his condition was grave.
Roy Black, a criminal defense attorney, has followed the case closely and examined the autopsy reports. He told ABC News that the police's conclusion Zahau committed suicide is "inescapable."
"The chances of someone wrapping a rope around her neck, dragging her up and throwing her over the balcony without her fighting back, without a single piece of evidence with no evidence of a struggle is virtually impossible," he said.
Many, including Zahau's family, have questioned the ruling of the death as a suicide. Zahau was found gagged and there was blood on her body and she suffered hemorrhages.
"You mean to tell me...somebody who's doing really well all 32 years of her life in a matter of two hours is going to do all this elaborate plan," said Mary Zahau.