Natalie Wood Death Forensic Evidence

NATALIE WOOD death ship captain leads homicide detectives in series of top secret tests to determine possible murder charges in the ongoing investigation.

THIS is the moment one of the last men to see Natalie Wood alive explained to cops in chilling detail how he believes Robert Wagner WAS responsible for his wife’s death.

In a startling and dramatic new development, forensic detectives probing the mysterious drowning secretly flew “Splendour” boat captain Dennis Davern to Hawaii so he could walk them through – step-by-step – Natalie’s terrifying final moments before she plunged to a watery demise.

These world exclusive photos show a real-life “CSI” moment as three investigators from the Los Angeles County Sheriff’s Department Homicide Bureau conducted a series of top-secret tests that will be critical to determining if “Hart to Hart” star Wagner will now sensationally face murder charges!

The National ENQUIRER has learned cops conducted a series of “noise tests” over four days in a bid to substantiate Dennis’ explosive eyewitness account of what he said REALLY took place on the mysterious night of Nov. 28, 1981, while boating off the Southern California coast.

Dennis – who passed a polygraph test administered to him by police – specifically has implicated Wagner in Natalie’s cold case death, and his information helped authorities reopen their files in 2011.

While Wagner has strongly denied fighting with his wife, Dennis has provided explosive testimony that the troubled couple had a vicious argument that he heard and partially saw before Natalie, 43, disappeared off the boat.

When quizzed for comment by The ENQUIRER, Los Angeles County Sheriff’s Homicide Lt. John Corina confirmed that police did recreate Dennis’ version of events aboard the 60-foot “Splendour,” and the “noise tests” indicated that he was indeed in a position to clearly hear the argument!

What’s more, the police official said a fourth person on the ill-fated boating trip – Natalie’s “Brainstorm” co-star, actor Christopher Walken – also could have heard the fight.

“Davern’s recollection of that night was pretty clear,” Lt. Corina confirmed. “We determined that the loud clamoring could be heard in the other rooms below deck.”

While Wagner, 85, has not been named “a suspect” in Natalie’s death, the top cop told The ENQUIRER that he – along with Dennis and Walken – is now classified as “a person of interest” in the investigation. He said that determination was made after the L.A. Coroner’s Office changed the cause of Natalie’s death from “accidental drowning” to “drowning and other undermined factors.”

Said Lt. Corina: “(Of the three), Wagner is the only person who is not cooperating and talking to us. I think it speaks volumes that he won’t speak about his wife’s death … As far as we know, he was the last person to be seen or heard talking to Natalie before she went missing!”

On the night she died, Dennis has told authorities that Wagner got into a heated argument with Walken.

According to Dennis, a furious Wagner shouted: “Do you want to f*** my wife?”

Wagner then smashed a bottle of wine, and Natalie fled the main cabin.

While Wagner has admitted arguing with Walken, he said he later looked in on his wife in their sleeping quarters but never saw her again until her body was later recovered in the water.

Dennis has challenged that position: According to his recollections, the couple had a brutal fight during which he heard “things (objects, possibly people) hitting the walls.”

At one point, Dennis claimed he glanced out of his “pilot house” window and saw the couple on the yacht’s aft deck.

He alleged: “They moved their fight outside … You could tell from their animated gestures they were still arguing.”

Fifteen minutes later, Dennis said Wagner informed him that Natalie may have returned to shore aboard the yacht’s small “dinghy,” noting that Wagner appeared “nervous and disheveled.”

Dennis said Wagner delayed the search for his wife before the dinghy was found a mile from the yacht – and a mile from where Natalie’s body was eventually found.

The cops’ new forensic development is considered a significant step in potentially solving the 33-year Hollywood whodunit, according to top Los Angeles private investigator Dan Hanks.

“The police have taken the extraordinary step of recreating what Dennis told them – the ‘CSI’ evidence is now absolutely critical in determining Wagner’s guilt. If I was him, I’d be very concerned – it looks like Wagner’s time could be running out!”