Mystery Solved: Old Murder Closed by New DNA Tricks

A cold case that had haunted Michigan for forty years finally got a finish line. For years, families and police chased leads that never panned out. Now, modern DNA science has finally named the killer of 16‑year‑old Sheri Jo Elliott, who vanished on November 16, 1983.

Elliott left her Flint home for a bus stop and never returned. Her family and neighbors searched frantically; four days later, her body was found in a ditch near Saginaw County. An autopsy showed she had been sexually assaulted and shot multiple times. The case went cold until 2023, when Michigan State Police teamed up with Western Michigan University’s Cold Case Program to re‑examine old evidence.

Students helped digitize decades of paperwork, and the fresh look led investigators to Roni Collins of Grand Blanc. Unfortunately, Collins had died by suicide in January before police could get a voluntary DNA sample. After his death, forensic teams extracted DNA from his autopsy tissues. They matched it to the DNA left at Elliott’s crime scene, confirming Collins as the perpetrator.

This case is part of a growing trend where genetic genealogy helps solve long‑standing crimes. Experts explain that the technique can sift through thousands of potential relatives, narrowing down suspects to a handful or even one. Even degraded samples—once useless—can now yield DNA from just a few skin cells or hair strands, thanks to advances in technology.

Police officials say that the success of these methods may deter future offenders who fear being caught by a powerful, modern investigative tool. The case also reminds us that justice can still be served long after a crime is committed, thanks to science.