The first-degree murders were allegedly committed by Adam M. Landerman, 19, who is the son of Joliet Police Sgt. Julie Landerman; Bethany L. McKee, 18; Joshua F. Miner, 24; and Alisa R. Massaro, 18, who lived in the home where the murders took place in Joliet, Ill., a town 40 miles southwest of Chicago.

McKee promised the victims sexual favors and video games. The perpetrators believed the victims were drug dealers and carried a lot of cash.

Massaro allegedly has a necrophilia fetish and engaged in sex with Miner and Adam Landerman, atop the lifeless bodies of Rankins and Glover. Miner told authorities that his longtime girlfriend, Massaro, fantasized about having sex with a corpse and he hoped to fulfill her fantasy. He tied the young black men up in beige sheets so they could lie on top of them, according to court documents reviewed by the Patch.com.

“This is one of the most brutal, heinous and upsetting things I’ve ever seen in my 27 years of law enforcement,” Police Chief Mike Trafton said after the slayings in January. “Not only the crime scene, but the disregard for common decency toward human beings.”

Photos courtesy of Will County Sheriff’s Department