Natalie Wood's secret memoir has been revealed for the first time.
In it, she talks about her personal demons and troubled relationship with husband Robert Wagner.
Wood's sister, Lana, read an excerpt to Inside Edition, including a passage where Natalie wrote: "I was surrounded by people but I felt totally alone.”
Also uncovered was a handwritten note by Natalie Wood about Wagner, in which she says there were "serious flaws in the relationship."
Natalie also wrote that “looking at it from the outside we must've seemed like the American dream, we were both attractive, and successful, so what could possibly be wrong?"
Lana says she doesn't know if there is a story fans would be "shocked to hear," adding, "Because it is a story I know all too well. She was a real person with real problems."
Lana is sharing more excerpts from the memoir on the podcast series "Fatal Voyage: The Mysterious Death of Natalie Wood."
Natalie Wood was found floating in the waters off Catalina Island in 1981 after boating with Wagner.
Early this year, police named him a person of interest in the death investigation.
Lana has renewed her long-held claim that Wagner is responsible for her sister's mysterious death.
"This is from the coroner, the new coroner, she was either unconscious or already passed away when she went into the water," Lana says.
Lana added that her sister's memoir was written years before her death, and that when she showed it to authorities, "they were quite surprised" by it.
"I don't know if the memoir will shed light [on her death], I think the things the detectives have found will shed light," she said.
Robert Wagner has denied having anything to do with Natalie Wood's death.
The latest episode of "Fatal Voyage: The Mysterious Death of Natalie Wood" arrives on iTunes Friday.