Criminal Mischief

THE MURDER OF STEVEN COZZI

The Tomasz Kosowski Case

When attorney Steven Cozzi arrived for work at his Largo, Florida, law office in March 2023, there was little reason to believe he wouldn't be going home that evening.

Then he vanished.

His wallet, phone and keys were left behind. Investigators found blood inside the men's restroom at the law firm, but there was no sign of Cozzi himself. His body has never been recovered.

What followed was an extraordinary murder investigation that eventually led authorities to Dr. Tomasz Kosowski, a plastic surgeon locked in a bitter legal dispute involving the medical practice where he had once worked. Cozzi represented defendants in that litigation, and prosecutors argued that Kosowski's anger over the case had become an obsession.

The evidence investigators assembled told a chilling story: surveillance footage, forensic evidence, movements before and after Cozzi disappeared, and a trail prosecutors said connected Kosowski directly to the attorney's death—even without a body.

But the case took another remarkable turn when Kosowski went to trial for first-degree murder and made a decision that dramatically raised the stakes:

He represented himself.

Facing the possibility of a death sentence, Kosowski questioned witnesses, challenged evidence and personally attempted to convince the court that prosecutors had accused the wrong man.

It didn't work.

In September 2026, Kosowski was found guilty of first-degree murder in the death of Steven Cozzi.

This week on Criminal Mischief, Carolyn Ossorio takes us inside the disappearance of Steven Cozzi, the evidence that transformed a missing-person investigation into a murder case, the bitter legal conflict prosecutors said supplied a motive, and the extraordinary spectacle of an accused killer attempting to defend himself against a case that could ultimately cost him his life.

And at the center of it all remains one haunting unanswered question:

Where is Steven Cozzi?

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Watch Criminal Mischief on the Evio Creative YouTube channel and subscribe with notifications turned on so you never miss a new episode.

Follow the Evio Universe on social media for episode clips, case updates and more true-crime stories.

Criminal Mischief with Carolyn Ossorio is an Evio Creative production.

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THE MURDER OF STEVEN COZZI

The Tomasz Kosowski Case

When attorney Steven Cozzi arrived for work at his Largo, Florida, law office in March 2023, there was little reason to believe he wouldn't be going home that evening.

Then he vanished.

His wallet, phone and keys were left behind. Investigators found blood inside the men's restroom at the law firm, but there was no sign of Cozzi himself. His body has never been recovered.

What followed was an extraordinary murder investigation that eventually led authorities to Dr. Tomasz Kosowski, a plastic surgeon locked in a bitter legal dispute involving the medical practice where he had once worked. Cozzi represented defendants in that litigation, and prosecutors argued that Kosowski's anger over the case had become an obsession.

The evidence investigators assembled told a chilling story: surveillance footage, forensic evidence, movements before and after Cozzi disappeared, and a trail prosecutors said connected Kosowski directly to the attorney's death—even without a body.

But the case took another remarkable turn when Kosowski went to trial for first-degree murder and made a decision that dramatically raised the stakes:

He represented himself.

Facing the possibility of a death sentence, Kosowski questioned witnesses, challenged evidence and personally attempted to convince the court that prosecutors had accused the wrong man.

It didn't work.

In September 2026, Kosowski was found guilty of first-degree murder in the death of Steven Cozzi.

This week on Criminal Mischief, Carolyn Ossorio takes us inside the disappearance of Steven Cozzi, the evidence that transformed a missing-person investigation into a murder case, the bitter legal conflict prosecutors said supplied a motive, and the extraordinary spectacle of an accused killer attempting to defend himself against a case that could ultimately cost him his life.

And at the center of it all remains one haunting unanswered question:

Where is Steven Cozzi?

LISTEN • FOLLOW • WATCH

Listen and follow Criminal Mischief wherever you get your podcasts, and leave a five-star rating and review to help more listeners discover the show.

Watch Criminal Mischief on the Evio Creative YouTube channel and subscribe with notifications turned on so you never miss a new episode.

Follow the Evio Universe on social media for episode clips, case updates and more true-crime stories.

Criminal Mischief with Carolyn Ossorio is an Evio Creative production.

Learn more about your ad choices. Visit podcastchoices.com/adchoices

Criminal Mischief - House of Horrors

Carolyn Ossorio investigates the developing case surrounding Philadelphia’s so-called “House of Horrors.” Authorities are investigating an Olney home in connection with at least seven missing women, as police and the FBI work through disturbing physical and digital evidence recovered during the investigation. With no remains yet confirmed at the property, Carolyn separates what investigators actually know from the speculation surrounding a case that is still unfolding.

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Criminal Mischief - House of Horrors

Carolyn Ossorio investigates the developing case surrounding Philadelphia’s so-called “House of Horrors.” Authorities are investigating an Olney home in connection with at least seven missing women, as police and the FBI work through disturbing physical and digital evidence recovered during the investigation. With no remains yet confirmed at the property, Carolyn separates what investigators actually know from the speculation surrounding a case that is still unfolding.

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CRIMINAL MISCHIEF

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CRIMINAL MISCHIEF

Jaycee Dugard: 18 Years Stolen

Special Guest: Paul Holes

On June 10, 1991, eleven-year-old Jaycee Dugard was walking toward her school bus stop near her home in Meyers, California, when a car approached. A man emerged, incapacitated her with a stun gun and pulled her into the vehicle. Jaycee's stepfather witnessed the abduction and gave chase, but within moments she was gone.

For the next 18 years, Jaycee remained a captive of Phillip and Nancy Garrido, hidden largely in a concealed compound of sheds, tents and makeshift structures behind their Antioch, California, home. She endured years of abuse and gave birth to two daughters while still being held captive. All the while, the outside world continued searching for the little girl who seemed to have vanished without a trace.

Then, in 2009, the case broke open in an almost unbelievable way.

Garrido's increasingly bizarre behavior brought him to the attention of authorities, eventually leading investigators to question the identities of the young women and girls accompanying him. On August 26, 2009, Jaycee finally revealed who she was.

Eighteen years after her kidnapping, Jaycee Dugard had been found alive.

This week on Criminal Mischief, Carolyn Ossorio revisits the extraordinary investigation into Jaycee's disappearance and recovery with special guest Paul Holes, the legendary cold-case investigator and forensic criminologist whose career has included work on some of California's most notorious crimes.

Carolyn and Paul examine the case through an investigator's eyes: the initial abduction, the enormous search for Jaycee, the behavior of Phillip Garrido, and the disturbing opportunities authorities had to discover what was happening years before Jaycee was finally rescued. They explore how a registered sex offender under supervision managed to conceal a kidnapped child on his own property, what investigators can learn from the failures surrounding the case, and how seemingly insignificant observations can ultimately crack an investigation wide open.

But this is also a story about something far more important than the people who abducted Jaycee.

It is about survival.

Jaycee Dugard emerged from eighteen years of captivity, reunited with her family and began the difficult process of reclaiming a life that had been interrupted when she was eleven years old. Her story remains one of the most extraordinary survival stories in modern American criminal history—and an enduring reminder that a missing-person case is never simply a file waiting to be closed.

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CRIMINAL MISCHIEF

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CRIMINAL MISCHIEFBAD BLOOD: The Hatfields and the McCoys

Long before true crime had podcasts, documentaries, or cable television, America had the Hatfields and the McCoys—two Appalachian families whose names became synonymous with hatred, revenge and the terrifying arithmetic of blood answering blood.

This week on Criminal Mischief, Carolyn Ossorio heads into the mountains along the West Virginia–Kentucky border to separate history from legend in perhaps the most famous family feud in American history.

The story emerged from a region still carrying the scars of the Civil War, where divided loyalties, economic competition and family allegiance could turn an argument into something considerably more dangerous. The Hatfields, led by William Anderson “Devil Anse” Hatfield, lived largely on the West Virginia side of the Tug Fork. Across the river in Kentucky were the McCoys, including patriarch Randolph “Randall” McCoy.

What followed has been reduced over the years to a wonderfully American caricature: two groups of angry hillbillies shooting at one another over a stolen pig.

The truth was considerably darker.

Carolyn follows the feud through disputed property and timber, the infamous hog trial, forbidden romance, political and economic tensions, murder and retaliation. She examines the 1882 killing of Ellison Hatfield, the brutal execution of three McCoy brothers in retaliation, and the escalation that ultimately transformed a local vendetta into a national sensation.

At the center of the story is also one of its strangest tragedies: Roseanna McCoy and Johnse Hatfield, two young people who crossed the family divide and discovered that romance isn't particularly easy when practically everyone at Thanksgiving is armed.

Then came the New Year's Night Massacre of 1888, when members of the Hatfield faction attacked the McCoy home, setting it ablaze and killing two of Randall McCoy's children. By then, the feud had moved far beyond family grievance. Governors became involved, posses crossed state lines, courts wrestled with extradition, and the dispute eventually reached the United States Supreme Court.

But Bad Blood isn't simply about who killed whom.

It's about how violence becomes inheritance.

Carolyn digs beneath more than a century of exaggeration to examine how the Hatfield–McCoy feud became American folklore, and why the names of two families from Appalachia still describe any conflict so bitter that the original grievance almost stops mattering.

Because eventually there comes a point when nobody is fighting over a pig, a piece of timber or something somebody said years ago.

They're fighting because the other family is the other family.

And once blood becomes the debt, somebody always believes there's another payment due.

Follow Criminal Mischief wherever you get your podcasts and leave us a 5-star rating and review to help more true-crime listeners discover the show.

Watch and subscribe on the Evio Creative YouTube channel, turn on notifications, and join Carolyn each week as she digs beyond the familiar headlines and into the people, evidence and history behind the crime.

This week on Criminal Mischief: BAD BLOOD — The Hatfields and the McCoys.

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CRIMINAL MISCHIEF

What Happened to Dee Warner?

On April 25, 2021, Dee Warner vanished from her home in Lenawee County, Michigan. The 52-year-old mother of five seemingly disappeared without a trace following an argument with her husband, Dale Warner. Her phone went silent. Her family couldn't reach her. And as the hours became days and the days became months, one question began to consume everyone who loved her:

Where was Dee?

In this episode of Criminal Mischief, Carolyn Ossorio chronicles the disappearance of Dee Warner and the investigation that would eventually transform a missing-person case into a murder prosecution.

Using interview clips, investigative audio and courtroom recordings, Carolyn reconstructs the increasingly tense search for Dee as family members pushed for answers and investigators began focusing their attention closer to home. Suspicion increasingly surrounded Dee's husband, Dale, and the circumstances of the couple's relationship and Dee's final hours became critical pieces of the investigation.

But for years, one essential piece of the case remained missing.

Dee herself.

Then, more than three years after she disappeared, investigators searching the Warner property made the discovery Dee's family had feared from the beginning: human remains concealed inside a sealed tank. The remains were subsequently identified as Dee's, finally answering the question of where she had been while opening an entirely new chapter in the pursuit of justice.

This is a story about a disappearance, a family unwilling to stop searching, an investigation that stretched across years, and the mounting suspicion surrounding the man who was supposed to know Dee better than anyone.

Carolyn takes us inside the interviews, the evidence and the courtroom as the case against Dale Warner unfolds and the horrifying truth about what happened to Dee finally emerges.

IN THIS EPISODE

The disappearance of Dee Warner • Her final hours at the Warner property • The growing suspicions surrounding Dale Warner • The family's fight to keep Dee's case alive • Investigators' search for physical evidence • Interview and courtroom recordings from the case • The discovery of Dee's remains • The murder case that followed

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CRIMINAL MISCHIEF

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