Because of the stigma, marginalization, and criminalization of the sex work industry, serial killers often target sex workers, knowing that they will likely be able to get away with killing people who are not valued by society or law enforcement.
Juan David Ortiz, a Border Patrol Agent, was apprehended after a woman in his captivity escaped and linked him to the four murders of sex workers working by the border of U.S. and Mexico. All four murders were committed in a short two-week span and in a similar way. Had his last potential victim not escaped, it is not clear how long it would have taken until he was caught.
Gary Leon Ridgway aka Green River Killer was convicted of murdering 49 sex workers but admitted to 80 murders although the bodies were never found. He stated that killing prostitutes was best because no one would know they were gone and they were easy to pick up.
The Giglo Beach killer targeted sex workers in Long Island in 2013.
Peter Sutcliff, the Yorkshire Killer, killed 13 women in England, some of them sex workers.
Steve Wright killed five sex workers in Ipswitch, England.
Robert Hanson killed 17 sex workers in Anchorage, Alaska. Again, he discovered that strippers and full service providers were less likely to be missed by the people around them and, as a result, reduced his chances of getting caught.
Joel Rifkin killed 17 sex workers in the New York area.
Robert William Pickton killed 49 women, most of them sex workers, in Canada.
Jack the Ripper was famous for killing full service providers in the late 1800s in Whitechapel, a low-income area of London. He was never caught, but the horrific and gruesome murders mysteriously stopped in 1888.