FIRST AIRED: April 28, 2018

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00:00:00
>> 72 year old Joseph James DeAngelo, the man accused of committing a string of rapes and killings across California, appeared in court for the first time on Friday.>> Is Joseph James DeAngelo your true and correct legal name?>> Yes.>> I'm sorry?>> Yes.>> Yes.>> The ex-cop was handcuffed to a wheelchair and has so far been charged with eight counts of murder attributed to the Golden State killer.
00:00:29
D'Angelo was arrested this week and is suspected in a dozen slayings as well as 45 rapes and more than 120 burglaries. A crime spree that sprawled from Sacramento all the way to Southern California in the 1970s and 80s. Investigators finally cracked the case by combing through geneology websites.
00:00:50
Detectives compared DNA found at the crime scenes to genetic information listed on the websites, which led them to family trees of close matches. The process produced a promising lead last week when the DNA of a relative pointed to D'Angelo.>> What would've had to have happened is that they would've had to supply those companies with a DNA sample from one of the rape victims.
00:01:14
>> When the 72-year old was identified as a possible suspect, investigators monitored D'Angelo's home and collected samples of what they called discarded DNA. They made a positive ID, the first break in a case that has long haunted victims' families and law enforcement, and is considered one of the most prolific in California's history.