Natalie Wood's younger sister has been on a forty 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 saiilng aboard the 'Spendour' with her husband Robert Wagner, and friend Christopher Walken. 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. In 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. Joining Nancy Grace Today:Lana Wood - Actress and Producer, Author: "Little Sister: My Investigation into the Mysterious Death of Natalie Wood" harpercollins.com, Instagram/Twitter: @DeyStreet Dr. Angela Arnold - Psychiatrist, Atlanta GA www.angelaarnoldmd.com, Former Medical Director of The Psychiatric Ob-Gyn Clinic at Grady Memorial HospitalSheryl McCollum - Forensic Expert & Cold Case Investigative Research Institute Founder, ColdCaseCrimes.org, Twitter: @ColdCaseTips Dr. Michelle Dupre - Forensic Pathologist and former Medical Examiner, Author: “Homicide Investigation Field Guide” & "Investigating Child Abuse Field Guide", Former Police Detective Lexington County Sheriff’s DepartmentAlexis Tereszcuk - CrimeOnline.com Investigative Reporter, Writer/Fact Checker, Lead Stories dot Com, Twitter: @swimmie2009 See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.