It's 1992, and something eerie is happening at the Harry S. Truman Veterans Hospital in Missouri. On the hospital's fourth floor, more veterans than usual are dying, dying in the same place around the same time during the night shift.

There was so many of them at the same time.

These codes are happening on Four East.

These weren't patients who were expected to die. In fact, many of them were getting ready to go home. And the deaths had another thing in common. The same nurse present at their bedside. The nurse was a young man who came across as competent and clinical. He was quiet, pale as a ghost, almost invisible. He worked nights, a shift when fewer people around to look over one shoulder. But over time, strange tales began to spread.

We went in to see the patient, and everything was normal. And about an hour later, the code blue is called.

My name is Jake Edelstein, and I know this story because my dad was a doctor at the Truman VA Hospital. In fact, he was the man who ordered an investigation into the deaths. I felt certainly he was killing people. But when the allegations that a killer might have been prouwing the halls of the Columbia VA reached the hospital's higher-ups, they did not jump into action like everyone expected. On the contrary, they They seemed to want to bury the story.

It looks like something terrible has happened. Let's keep it as quiet as we possibly can and not let it get any bigger than it already is.

They just wanted to drop it and move on.

A handful of brave whistleblowers did whatever they could to make sure the VA didn't just drop it. But speaking out came with a cost.

His phone was being tapped, he was being followed, and he wasn't sure what was going to happen to him.

They thought that it was all going to be swept under the rug.

Maybe these guys were serious, but then somebody above them said, Shut up about it.

On this season of Witnessed, I'm going back to my hometown to explore the unsolved 30-year-old mystery of what might have been one of the most prolific serial killers in US history. Join me in an effort to find the main suspect, the nurse, and investigate what really happened during the night shift.

So they would rather see a whole bunch of innocent people killed than to do anything about it. I mean, my gosh, what do you want him to do? Clear out half the hospital?

From Campside Media and Sony Music Entertainment, this is Witnessed: Night Shift, coming September first. Subscribe on Apple podcast to binge all episodes or listen weekly wherever you get your podcast.