June 24, 1960 - Walter E. Ellis
His crimes spanned more than two decades before investigators connected them, a gap that illustrates both the vulnerability of his victims — women whose cases were not initially treated as related — and the limitations of forensic methods available at the time. DNA profiling ultimately did what years of parallel investigations had not, linking seven murders across Milwaukee into a single pattern.
From Wikipedia
Walter Earl Ellis (June 24, 1960 – December 1, 2013), known as the Milwaukee North Side Strangler, was an American serial killer who raped and strangled at least seven women in the city of Milwaukee, Wisconsin between 1986 and 2007. Until May 2009, the killings were considered to be independent of one another, but were then linked together via DNA profiling. Ellis was arrested as a suspect on September 7, 2009, and convicted for the seven murders in February 2011, receiving seven consecutive life sentences without the chance of parole.
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