The death of Natalie Wood is still one of Hollywood’s darkest unsolved crimes.  Even as we approach the 40th anniversary, those closest to the case have conflicting theories on what really happened to the actress on that fateful night aboard their yacht.  Today, Natalie’s sister Lana shares with Dr. Oz never-before-heard information from her own investigation into what happened the night Natalie died and what she would say to her brother-in-law Robert Wagner now.

Dr. Oz asks Lana Wood if she believes her sister would’ve survived if she was found earlier.

Watch THE DR. OZ SHOW, weekdays at 9 a.m. on CBS 62.