the first case solved using familial DNA | serial killer joseph kappen

in 1973, there was a serial killer, dubbed the saturday night strangler, in south wales. however, it would take nearly three decades and a completely new investigative technique to confirm this fact, and then identify the man who killed sandra newton, pauline floyd, and geraldine hughes. familial DNA analysis and investigative genetic genealogy are popular investigative techniques today, but this serial killer cold case is the very first time such a technique was used in an investigation.


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