They leave their victims’ bodies at the scene

reportedly boasted of murdering 20 more — but he barely made a ripple.

He is known for having sex with the victims’ corpses. Necrophilia is a common feature with this breed of serial killer.

When apprehended, they make false confessions or are confused with other copycat killers.

Ralph Harris attacked 26 women in Chatham and Avalon Park from 1992 to 1995, raping and killing six of them.

Starting in 2001, another generation of Chicago serial killers of the same M.O. emerged.

between the ages of 18 and 58 were killed in a similar fashion. Most of the victims were sex workers who had previous encounters with the justice system.

The fact that there is such a low rate at which DNA has been obtained is suggestive,” Hargrove said. “It’s possible this killer or killers are aware not to leave their DNA behind.”

“There are storage rooms that have kits on top of kits on top of kits,” she said.

sober during his crimes and didn’t even drink or use drugs

between 2011 and 2016, when Vann was incarcerated in Texas and Indiana, it was relatively quiet in Chicago.

Vann says he is not cooperating with other states as it would create jurisdictional competition that complicates his sentence. Nor was he revealing any gang-related hits. He wanted to avoid trials.