Actor Robert Wagner is a person of interest in the death of his wife, Natalie Wood. That is according to a lieutenant with the Los Angeles County Sheriff’s Department. John Corina tells CBS’ “48 Hours,” “As we’ve investigated the case over the last six years, I think he’s more of a person of interest now.” Wood drowned nearly 40 years ago while on the family’s yacht near Catalina Island. Wagner, actor Christopher Walken and boat Captain Dennis Davern were on board. Investigators initially called the Wood’s death an accident, but reopened the investigation in 2011.