Buried Evidence: The Herman Williams Case

The clock on the courtroom wall was ignored. In 1994, everyone was watching the pathologist on the stand, Dr. Nancy Jones. She was there to provide a scientific fact. A time of death. Last week, we talked about the patterns of buried evidence in these cases. Tonight, we look at one man’s story, where the evidence wasn't just buried — it was invented right there in that witness box. His name was Herman Williams. The prosecution had a problem. They needed Penny Williams, Herman’s ex-wife, to have been murdered in Waukegan, Illinois, before midnight on September twenty-second, 1993.

Any later, and their timeline against Herman fell apart. So Dr. Jones, the forensic pathologist, gave them what they needed. She testified, with certainty, that the time of death was before midnight, and no later than one in the morning. There was no scientific basis for this. It was, as his new lawyers would later say, manufactured solely to secure a conviction. Then came Detective Lou Tessman. He told the jury that Herman Williams had confessed. No recording. No notes signed by Herman. Just the detective’s word. And Herman’s own defense attorney… he didn’t challenge it.

He didn’t question the made-up timeline. He didn’t bring up that this same detective had a history of these convenient, unrecorded confessions. And so, Herman Williams was convicted of murder and sent to prison. For years, that was the official story. A man confessed. The science confirmed it. But in Lake County, Illinois, the official story has a habit of coming undone. This is a county with one of the highest rates of wrongful convictions in the state. A place where eleven people have been exonerated, after serving a collective one hundred eighty-four years for crimes they did NOT commit.

Years turned into decades. Herman sat in a cell, insisting on his innocence. His case was taken up by the Illinois Innocence Project. His new attorneys, Lauren Kaeseberg and Vanessa Potkin, began to pull at the threads. They looked at Detective Tessman and found a clear pattern of misconduct, of fabricating confessions that put innocent men like Juan Rivera and Jason Strong behind bars. They looked at the autopsy report. And then, they looked at the physical evidence that was collected in 1993. Specifically, scrapings from under Penny Williams’s fingernails.

Back then, DNA testing wasn't what it is today. But now, decades later, it could tell a story. The sample was sent to a lab. The results came back. The DNA found under the victim’s nails, evidence of her final struggle… did not belong to Herman Williams. It excluded him completely. The entire case rested on two pillars: a confession that was never recorded, and a time of death that was scientifically baseless. Now, the only piece of physical evidence that could point to the killer… pointed somewhere else. The pillars crumbled.

On September sixth, 2022, after twenty-eight years, ten months, and twenty-one days, Herman Williams walked out of prison a free man. The Lake County State’s Attorney’s Office, now under new leadership that has pledged reform, formally acknowledged it all. The unreliable testimony. The suppressed evidence. The police misconduct. It was all true. Herman’s freedom is a victory, but it’s a victory that carries the weight of nearly twenty-nine lost years. And it leaves a chilling question hanging over every other case touched by that pathologist, and by that detective.

It reminds you that the fight for justice doesn't always end in a courtroom. Sometimes, that’s where it begins.