The death of Natalie Wood still remains a mystery. The official cause of death for the actress was been changed this week from "accident" to "undetermined", sparking the case to be re-opened once again. According to TMZ, the change has been made to her death certificate at the end of June this year. 

The 43-year-old was found dead on November 20,  1981 and was reported to have drowned during a yacht trip with her husband Robert Wagner and Christopher Walken, who was one of her co-stars in the film "Brainstorm."

No official suspect has been named and her husband Wagner is reportedly not a suspect. According to TMZ, there is no evidence that points to any suspect. After Wood's death, Wagner and Walken both told officials that the married couple had had an argument but made up afterwards. Wagner reportedly went to bed soon afterwards, but Wood had already disappeared by then. A search was put in place to find the star, and her body was found the next morning. 

The case of Natalie Wood's death was reopened last November when sources reportedly went to the sheriff's department with new information. 

The cause of death was changed to "undetermined" because it was determined that the original coroner's report could have been too hasty and that the marks on her body could have been caused by anything else and that the "accident" ruling was too broad. 

Wood was best known for her roles in "Miracle on 34th Street," "Splendor in the Grass," "Rebel Without a Cause," and "West Side Story." She was married to Wagner twice, but was also married to producer Richard Gregson in between her marriages to Wagner. 

She drowned near Santa Catalina Island in California.

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