They are two of the longest unsolved crimes in American history, inspiring countless theories, books and films. The Zodiac Killer was linked to five murders in the late 1960s; the 1947 Black Dahlia case centered around the killing of Elizabeth Short, a young Hollywood hopeful. Now, a retired LAPD homicide detective has made a startling claim about these cold cases: he says the crimes were committed by the same killer. #Zodiac #Hollywood #TrueCrime #BlackDahlia

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