"Nearly four decades after the unexplained drowning death of Hollywood star Natalie Wood, Los Angeles County Sheriff's investigators tell '48 Hours' that her then-husband, actor Robert Wagner, is now a person of interest"

CBS:

Wood drowned off the coast of Catalina Island in California in November 1981 after she went missing from the Splendour, her family's yacht. Also aboard that night were Captain Dennis Davern, Wagner, and Wood's friend and fellow actor, Christopher Walken.

...

At first, the three men aboard the boat -- Wagner, Walken and Davern -- told detectives that Wood, famously terrified of dark water, took off in a dinghy and went ashore. Over time, however