NATALIE STILL HAUNTS WOEFUL WAGNER!

RATTLED Robert Wagner may have escaped prosecution in the decades-long case involving the tragic death of his wife Natalie Wood - but insiders claim he's still wracked with regret and ashamed to show his face in Hollywood!

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Sources close to the onetime "Hart to Hart" lothario, 92, say he's thanking his lucky stars the final detective assigned to the 1981 case has retired.

L.A. County Sheriff's Department detective Ralph Hernandez was the last of a team of 11 lawmen who were probing Wagner as a person of interest after the "West Side Story" beauty perished off California's Catalina Island.