After 137 years of speculation, we investigate the forensic breakthrough that may have finally unmasked history's most notorious serial killer through DNA evidence from Catherine Eddowes' murder scene - linking Polish barber Aaron Kosminski to the Whitechapel killings that terrorized Victorian London.

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In this deeply researched episode, we examine:

• The brutal 1888 murder of Catherine Eddowes - the Ripper's fourth victim - and how a bloodstained shawl recovered from her crime scene would become crucial evidence over a century later
• The controversial journey of this historical artifact - from being taken by a police officer at the murder scene to its 2007 auction purchase by researcher Russell Edwards who commissioned groundbreaking DNA testing
• How modern forensic techniques extracted mitochondrial DNA from the shawl, reportedly matching both Eddowes' descendants and living relatives of Aaron Kosminski - a Polish immigrant who was an original police suspect
• The scientific debate surrounding this evidence - from questions about chain of custody and contamination to why some experts remain skeptical despite claims of a "100 percent DNA match"

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