Steven Cozzi's Vanishing: How Kosowski Was Convicted Without a Body

Cozzi Vanishes Mid-Workday (0:00)

On March twenty-first, twenty twenty-three, Steven Cozzi left his desk at a law office in Largo, Florida. An unfinished email remained open. Music was still playing. His wallet, keys, and phone stayed behind. Cozzi went to the bathroom and never returned.

Less than two hours later, surveillance recorded a man entering that building with a large box and a backpack. The same footage showed a man of similar build leaving in different clothes, pulling a large cart toward a gray Toyota Tundra. Cozzi’s body has never been recovered. But the disappearance led to a first-degree murder charge, an unusual bench trial, and a guilty verdict from the judge who heard the case alone. The question is how those separate pieces came to point in one direction.

The relationship between the two central figures began in a civil dispute. Cozzi was a lawyer at Blanchard Law, a Largo firm representing the Laufer Institute of Plastic Surgery. Tomasz Kosowski had worked there as a breast reconstruction surgeon. Kosowski worked at the institute from twenty sixteen to twenty eighteen. According to his LinkedIn page, Cozzi had worked at Blanchard Law since twenty eighteen.

Their paths later crossed through litigation concerning medical billing. In twenty nineteen, Kosowski sued the clinic. The lawsuit alleged that its insurance biller mishandled claims and lied to patients. Cozzi represented the opposing party in that medical billing dispute, placing him on the other side of Kosowski’s case. A search warrant said that after a deposition at Cozzi’s office on January twenty-sixth, Kosowski confronted him.

The year attached to that date is not specified in the supplied record, so the confrontation belongs to the documented dispute, but its exact timing remains limited. Prosecutors later said Kosowski had expressed animosity toward Cozzi as the civil proceedings continued and had plotted a killing for months.

The Medical Billing Lawsuit (2:00)

Those statements describe the prosecution’s theory. They are not a separate finding about Kosowski’s motive. On the morning of March twenty-first, Cozzi arrived at work at eight thirty-seven. His colleagues understood that he had gone to take a bathroom break before a scheduled hearing. Then the routine stopped making sense.

According to Largo police, Cozzi went to the bathroom about seventy-three minutes after arriving. His colleagues found no ordinary departure. His laptop and tablet remained in the office, as did the keys, wallet, and phone. His vehicle was also found at the office address. Nothing in that immediate picture suggested that Cozzi had simply left for an errand.

The unfinished email and playing music supplied another detail: the workday appeared to have stopped mid-action. The first physical clue came from the bathroom. A co-worker contacted police after finding what appeared to be blood spatters and noticing a strong chemical smell. Jake Blanchard later testified that the room smelled overwhelmingly of cleaning products and alcohol. Blanchard testified that blood was visible on the walls, the toilet seat, and the floor.

Forensic investigators determined that a large amount of blood had been cleaned from the bathroom floor. Traces were also found behind the restroom door. There was no sign of Cozzi inside. Instead, investigators had a room where blood had been removed, a chemical odor had been reported, and the person expected to return to his desk was gone. The missing man and the cleaned scene became one investigation.

The surveillance timeline supplied the next change in understanding. At eight thirty-two that morning, a gray Toyota Tundra identified as Kosowski’s arrived outside the law firm.

An Unfinished Email at the Desk (3:45)

Two minutes later, an unidentified man got out. At eight thirty-four, that man entered the building carrying a large box and wearing a backpack. The footage did not, by itself, establish what the box contained or identify the person with certainty. It established an arrival before Cozzi disappeared. At ten twenty-two, a man of similar build left the building.

He wore different clothes, carried the same backpack, and pulled a large cart whose contents were covered by a red blanket or bag. The sequence raised a question investigators could not answer from the footage alone. What had entered the office in the box, and what was being taken out beneath the covering? The cart made the disappearance visible without revealing its contents. The hearing timeline added another layer.

From ten twenty-eight until eleven oh-four, Kosowski was on the call for the hearing while Cozzi was absent. The surveillance subject had already left the building at ten twenty-two. That distinction matters. Some accounts described the alleged killing as occurring moments after a conference call, but the more detailed timeline places Kosowski on the call after the man had left the building. The supplied record does not resolve whether those descriptions refer to separate calls or a simplified account.

At eleven oh-five, the man returned to the cart and struggled to load it into the Tundra’s bed. At eleven fifty-eight, the Tundra arrived at Kosowski’s home in Tarpon Springs, about twenty miles from the office. The surveillance evidence did not show a body. It showed a vehicle, a person of similar build, changed clothing, a backpack, a cart, and a route connecting the law office to Kosowski’s home. The physical evidence would have to supply the missing link.

Police said Kosowski’s fingerprint was found in the facility’s breaker room, an area not normally open to the public. That did not explain the disappearance by itself.

The Tundra Arrives at Dawn (5:45)

It placed Kosowski, according to investigators, in a restricted part of the building. A search of the Tundra and Kosowski’s home produced further findings. Blood was reported in the truck bed, on the driver’s side headrest and floorboard, and in the garage where the vehicle was parked. The second vehicle, a Corolla, contained a ballistic vest with a substantial amount of blood, according to the reported evidence. Fibers from the vest and vehicle matched materials associated with the Tundra’s covering, the bathroom, and Cozzi’s car.

A bag in the Corolla contained a stun gun, masks, duct tape, brass knuckles, syringes, and sedative drugs, including succinylcholine, a paralyzing agent. The record identifies those items, but it does not establish how the drug was used, or whether it was used on Cozzi. This was the point at which the investigation had more than a missing person’s desk. It had a cleaned bathroom, blood associated with two vehicles, a restricted-area fingerprint, connected fibers, and equipment prosecutors later described as preparation. Prosecutors alleged that Kosowski waited in the bathroom, killed Cozzi there, and removed the body in the cart.

That account fits the bathroom evidence and the surveillance sequence presented at trial, but the precise act inside the room was not documented in the supplied record. The case then followed a second route, away from the office. Investigators used cellphone records and surveillance video to track Kosowski to a remote area west of Miami on the Tamiami Trail. Authorities believe Cozzi’s body was placed in a Dumpster there and later emptied by a garbage truck.

Kosowski Joins the Court Call (7:30)

The driver reportedly noticed an unusually vile smell at the stop. A video showed a large garbage bag falling into the truck in a manner prosecutors called inconsistent with normal trash. A police cadaver dog indicated that a body had been in the Dumpster, according to court documents. But the route’s landfill compacted garbage, and investigators were too late to recover physical evidence from the emptied Dumpster. That is where the physical search ends.

Investigators could describe a suspected route from the office to the truck, from the truck to Kosowski’s home, and later toward the Dumpster. They could not recover Cozzi’s remains. Five days after Cozzi vanished, detectives told his husband, Michael Montgomery, that they believed Cozzi had been murdered. The investigation had shifted from locating a missing attorney to building a homicide case without the central physical evidence. Evidence collected at Kosowski’s home led to his arrest on a Saturday, four days after the killing according to the reported account.

At the time of arrest, authorities said he had nearly three hundred thousand dollars in cash, two passports, and a bag they called a “murder bag.” The phrase “murder bag” came from an assistant state attorney. It was a prosecutorial label, not a neutral description. The record does establish the contents reported in the Corolla, but it does not establish what Kosowski intended to do with the cash or passports. Kosowski was charged with first-degree murder and pleaded not guilty, according to his lawyer. He insisted on representing himself.

He also wanted no jury, so the trial proceeded before Circuit Judge Joseph Bulone. That choice changed the shape of the verdict. There was no jury to persuade through a collective decision. Judge Bulone was the lone fact finder, responsible for weighing the surveillance, forensic findings, and the competing interpretations of the evidence.

Blood on a Ballistic Vest (9:30)

The supplied record does not provide a full reconstruction of Kosowski’s defense theory. That gap matters. A criminal trial contains competing arguments, but without the defense account in this record, it would be inaccurate to invent one or imply that every issue was uncontested. The prosecution’s theory was cumulative. No single item showed the entire alleged killing.

Surveillance connected Kosowski’s truck and a changing figure to the office. The bathroom evidence indicated blood and cleaning. The vehicles extended that physical trail beyond the building. The DNA findings strengthened that chain. Trial-submitted results confirmed Cozzi’s blood in the bed of Kosowski’s pickup and on the ballistic vest in his second car.

Court documents also described Cozzi’s blood and DNA in the bathroom and garage, mixed with Kosowski’s DNA. Still, DNA did not show the exact moment of death. The camera did not reveal what was beneath the cart’s covering. The cadaver-dog indication did not recover a body. DNA results confirmed Cozzi's blood in the truck bed and on the ballistic vest, yet the moment of death stayed outside the record.

The cadaver dog indicated a body had been in the Dumpster, but nothing was recovered. The camera captured a figure pulling a covered cart, never revealing what was inside. The missing body became the case’s most visible absence. It prevented the investigation from recovering remains or examining them for a cause of death. The prosecution's case therefore relied on the surveillance timeline, the forensic findings from the bathroom, the blood and DNA tied to Kosowski's vehicles and garage, and the hearing records presented to the judge.

Authorities believed the landfill’s compaction made recovery nearly impossible.

A Dumpster on the Tamiami Trail (11:15)

The Dumpster evidence therefore ended not with discovery, but with loss: a suspected disposal point, a garbage route, and no recovered remains or other physical evidence from that location. The supplied material also shows the judge's guilty finding resting on the surveillance video, the forensic results, the DNA findings, and the documented timeline, rather than on any statement of admission from Kosowski included in the record. The verdict would have to rest on the relationships among objects, locations, video, forensic results, and the timeline presented to the judge. Judge Bulone considered the surveillance video, DNA findings, and evidence described as Kosowski’s growing fixation with Cozzi. He found Kosowski guilty.

That verdict established the legal result of the trial, while not filling every factual gap surrounding the missing remains. The result demonstrates how a homicide prosecution can proceed without a recovered body when the fact finder accepts a layered circumstantial case. Here, the layers ran from a civil dispute, to a timed arrival, to a changed figure and covered cart, to blood and DNA. But “without a body” does not mean “without uncertainty.” The precise events inside the bathroom remain outside the supplied record. The role of succinylcholine remains unspecified.

The defense’s full position is not reconstructed here. Cozzi’s remains remain unrecovered. After the guilty finding, the case moved to a penalty phase. Judge Bulone would decide between life imprisonment and death. The supplied material does not provide the final penalty decision, so the outcome of that phase must remain open.

What can be stated is narrower, and stronger, than the most dramatic allegation. Steven Cozzi disappeared from his law office during a workday. The investigation connected Tomasz Kosowski to the scene and to evidence carried beyond it. A judge found him guilty.

The Murder Bag at the Door (13:15)

What cannot be stated is where Cozzi’s remains are, exactly what occurred in the bathroom, or what happened to the evidence after the landfill received it. Those unanswered questions do not erase the verdict. They define the boundary of what this case still does not reveal. If you want more evidence-led case narratives that distinguish documented facts from allegations and unresolved questions, subscribe to the channel.