CONVERGENCE—Gregg Owen

CONVERGENCE—Gregg Owen

From True Murder: The Most Shocking Killers in True Crime History by Dan Zupansky

March 16, 2026 · 1h 20m

About this episode

The episode explores the prosecution of a double homicide case in 1970s Chicago from the perspective of the prosecutors.

This story seems impossible. But every word is true. Convergence is the account of a vicious double homicide in 1970s Chicago and a trial that almost didn't happen. This is a different kind of true crime book. It isn't a mystery, because the killer was arrested right away. It's not a police story, although Convergence is there at every step of their investigation. It's not a defense lawyer's story. This is a story from the other side of the courtroom. Convergence is the story of Gio Messina and Delphine Moore's murders and the trial that followed, but this time told from the perspective of the prosecution. You are there to witness how a case is built, how it's brought to court, and how it unfolds when the trial starts. You see what happens when power and money try to keep the trial from starting at all. You follow the prosecution from the courtrooms of Chicago to rural Tennessee looking for new evidence to replace the evidence that vanished. You're introduced to the choreography of the courtroom: listening in on the careful strategizing, understanding the thought behind what a jury hears, and getting a close view of what's involved in how it's presented. Most importantly, you're…

People in this episode

Host: Dan Zupansky

Guest: Gregg Owen

Topics covered

  • double homicide
  • prosecution
  • courtroom strategy
  • true crime
  • Chicago history

Keywords

  • true crime
  • homicide
  • trial
  • prosecution
  • Chicago
  • courtroom

Mentioned in this episode

Places: Chicago, Tennessee

More episodes of True Murder: The Most Shocking Killers in True Crime History

Explore listener stats, chart rankings, contacts and more on the True Murder: The Most Shocking Killers in True Crime History podcast page.