The National Center for Missing and Exploited Children also created detailed composite drawings of the decedents,[3][4] who were individually known as Adam and Brad; names given by Newton County coroner Scott McCord decades after their murders in an effort to individualize and humanize the victims.

[8] On October 18, 1983,[9] a middle-aged couple gathering wild mushrooms discovered two partially buried human skulls alongside an oak tree close to an abandoned farmhouse in Lake Village, Indiana.

[16][17] The level of decomposition of each victim and the clothing discovered upon each body suggested several weeks or months had elapsed between each murder.

[25][26] According to his posthumous confession, Adam was a hitchhiker who agreed to submit to a sexual act for $75; Brad was an individual whom Eyler claimed to have been introduced to by his alleged accomplice, Robert David Little, at his Terre Haute residence.

[31] The clothing worn by this decedent included a distinctive red and black belt, inscribed with the word "devil" multiple times.

[33] In July 2023, Adam was formally identified via forensic genealogy as a 16-year-old Chicagoan named Keith Lavell Bibbs.

At this location, Bibbs was bound to a wooden post, blindfolded and gagged, then stabbed multiple times in his upper and lower midsection.

[22] John Ingram Brandenburg Jr.[38] (formerly known as Brad) was the fourth and final murder victim discovered at the abandoned farmhouse.

[41] The crude nature of these tattoos indicated a possibility this decedent may have served time in jail or a juvenile detention center in life.

In April 2021, Brad was formally identified as a 19-year-old Kentucky native named John Brandenburg Jr., who had disappeared from Chicago in 1983.

[36] Shortly thereafter, Little persuaded this individual to participate in a sexual act at the abandoned farmhouse where Eyler had earlier murdered Bartlett and Bauer[46] upon the promise of being paid one-hundred dollars.

[42] Given the fact Eyler's identified victims lived in either Indiana or Illinois, investigators believed the two unidentified decedents were also likely native to the Midwestern United States.

[5][n 6] Upon revealing the successful identifications of Brad and Adam, investigators discovered both teenagers had been Chicago residents, with the former born in Kentucky.

Prior to their identification, several forensic facial reconstructions of Brandenburg and Bibbs's faces were generated by the National Center for Missing and Exploited Children.

[28] The facial reconstructions by the National Center for Missing and Exploited Children reportedly took approximately eighteen months to complete.

Both decedents—plus a further unidentified decedent known as Charlene Newton Doe whose death is unrelated to these cases[52]—were interred inside of a mausoleum in Riverside Cemetery in Brook, Indiana.

[31] One month after the April 2021 identification of John Brandenburg, his body was buried in Rest Haven Cemetery in Corbin, Kentucky.