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b'Natalie Wood\'s younger sister has been on a 40- year journey to find out what really happened the night the Hollywood star drowned. The 43-year-old actress was found in the waters off Catalina Island. She had been sailing aboard the \'Spendour\' with her husband Robert Wagner, and friend Christopher Walken.\\n\\n Originally, the coroner ruled her death an accidental drowning, but since then, the autopsy has been revised, and her death labeled, suspicious. Robert Wagner is considered a suspect in Wood\'s death.\\n\\nIn her new book, "Little Sister: My Investigation Into the Mysterious Death of Natalie Wood," Lana Wood lays out her beliefs of what happened that night, based on the new autopsy finding, new witness statements, and more.\\n\\nJoining Nancy Grace Today:Lana Wood -\\xa0Actress and Producer, Author: "Little Sister: My Investigation into the Mysterious Death of Natalie Wood"\\xa0harpercollins.com, Instagram/Twitter: @DeyStreetDr.\\xa0Angela\\xa0Arnold\\xa0- Psychiatrist, Atlanta GA www.angelaarnoldmd.com, Former Medical Director of The Psychiatric Ob-Gyn Clinic at Grady Memorial HospitalSheryl\\xa0McCollum\\xa0- Forensic Expert & Cold Case Investigative Research Institute Founder, ColdCaseCrimes.org, Twitter: @ColdCaseTipsDr. Michelle\\xa0Dupre\\xa0- Forensic Pathologist and former Medical Examiner, Author: \\u201cHomicide Investigation Field Guide\\u201d & "Investigating Child Abuse Field Guide", Former Police Detective Lexington County Sheriff\\u2019s DepartmentAlexis\\xa0Tereszcuk - CrimeOnline.com Investigative Reporter, Writer/Fact Checker, Lead Stories dot Com, Twitter: @swimmie2009'