“I've seen statistics that some two thousand serial killers are operating in the United States today,” Holes wrote in his new book , Unmasked My Life: How I Solved America's Cold Cases, The New York Post reported.
Holes, the man who Los Angeles Magazine notes served as a forensics chief for Contra Costa County in California, told the Post that the figure was “realistic,” though it is an approximate.
Holes said that serial killers typically take advantage of those marginalized by society, such as homeless people, drug addicts, and prostitutes. Former forensics chief Holes stated that killers are attracted to these people because they tend to be free from contact with family who are accustomed to them disappearing for lengthy durations.
“Often these predators are preying on people whose lives have spiraled down, so when they go missing, no one is really paying attention,” said the Post. “Killers are hiding behind the opioid crisis.”
Holes then went on to explain that murderers utilize the tragedy as a way to conceal and less force is needed to strangle someone who is high on opioids compared with a sober victim. Pathologists can consider a causal link to drug abuse, and not even noticing a tiny bruising on the neck of a victim, or other subtle indications that foul play was in play due to the less force employed, Holes remarked.
Holes referred to Samuel Little, a serial murderer who admitted to strangling women in the span of four decades, according the Washington Post. Little would insist that his victims eat while he was choking them, which reduced the physical evidence of their bodies, making investigation efforts harder for the experts, Holes explained.
The former chief of forensics continued to discuss the changes in the way serial killers function in the present, as opposed to about four to five decades ago.
Holes explained that although back in the 1970s, predators might have gained access to someone's home to commit murder or even pick up hitchhikers, surveillance systems, as well as other measures to protect the public, have stopped them from committing such outrageous murders. Instead, they seek to meet people like prostitutes on the internet and then kill them.
Holes utilized “genetic genealogy” and DNA mapping to pinpoint DeAngelo to be the “Golden State Killer,” which led to his arrest in 2018 according to the Washington Post and L.A. Magazine. DeAngelo pleaded guilty to 13 murders and 13 rape charges in June of 2020. He was sentenced to life in prison without parole in August, 2020. NPR reported.