For more than two decades, the killing of David Vanderzee sat as one of those cases that seemed to have gone cold for good, the kind of murder where the first answers never quite made sense but no one had enough to force the truth into the open.
Then, on May 28, 2025, according to the Open Case channel’s report, detectives finally moved in.
The channel’s host said the arrests of 70-year-old Roxanna Collins and 70-year-old John Viskocil ended what had looked, from the outside, like 22 years of safety. The pair had lived for years under the belief that the case had stayed buried, but the host described the moment as proof that cold cases can have a long memory.
A Traffic Stop Became An Arrest
The arrest of Collins began with what looked like a normal traffic stop in McHenry County, Illinois.
In the footage shown by Open Case, a deputy told Collins he had stopped her because she had not used her turn signal while leaving her neighborhood, turning, and changing lanes. Collins told him she was on her way to get her oil changed and was worried because her husband was home sick.
The conversation sounded calm at first.
She handed over her license and insurance, but the tone changed when the deputy asked her to put her hands behind her back. Collins asked what was going on, and the deputy told her he would explain in a moment.
Soon after, he told her she had a warrant out of Kenosha County.
“I didn’t know about anything like that,” Collins said in the footage.
The deputy told her she was being detained based on the confirmed warrant and would be taken to jail before extradition to Wisconsin. When Collins asked whether the warrant had just been issued, the officer told her it had been issued that day.
There is something striking about how quiet the moment was. A case that had lasted 22 years did not reopen with sirens, shouting, or a dramatic chase. It began with a deputy telling an elderly woman that the life she had been living was suddenly over.
Detectives Said The Case Was No Longer Just A Question
A detective later explained the warrant to Collins, according to the footage used by Open Case.
He told her she was being arrested for first-degree intentional homicide, party to a crime, in connection with the murder of David. The detective also made clear that this was not simply a warrant to ask more questions.
“A judge has signed it saying there’s enough probable cause to state that you are involved,” the detective told her in the footage.
Collins said she wanted to talk to her lawyer and repeatedly denied knowing anything. The detective said investigators had been working the case for 22 years and that he personally had been involved since 2012.
He also reminded her that detectives had spoken to her just a few weeks earlier.
The detective’s comments carried the weight of a long investigation reaching its final turn. He told Collins the evidence was clear that she was involved, or at the very least knew what happened, and said there was “no other theory” of the case.
Collins still insisted she did not know anything.
The Open Case host described this as the moment when the long-running illusion of safety fell apart, not because of one sudden confession, but because investigators believed the old pieces finally lined up.
Another Arrest Down The Street
While Collins was being processed in Illinois, the Open Case host said another team of detectives was knocking on a door down the street for John Viskocil.
In the footage, officers told Viskocil he had a warrant for his arrest. He appeared to understand what the warrant was about, though he did not offer much.
When officers told him they wanted to take him downtown and talk, Viskocil asked to put on regular jeans instead of house pants. Officers allowed him to change and retrieve his wallet.
At one point, Viskocil told them, “Nothing has changed,” and called it an “ugly situation,” according to the footage.
But when detectives said they wanted to go over the case and let him respond, he chose to stop the conversation and said he would rather call his lawyer.
That detail matters because both suspects were offered chances to talk, and both quickly turned toward legal counsel. That is their right, of course, and it should not be treated as guilt by itself. But in the story told by Open Case, it also showed how little investigators were getting directly from the two people they believed were central to the old murder.
The Night David Vanderzee Was Killed
To explain why detectives finally secured warrants, the Open Case host took the story back to September 2003 in Randall, Wisconsin.
David Vanderzee, described in the report as a 50-year-old Navy veteran, had been married to Roxanna for only two months. He was at home when he was killed.
According to the host, there were no signs of forced entry, no signs of a struggle, and nothing appeared to have been stolen. David had been shot five times in the back of the head at close range.
The host described the killing as a “cold-blooded execution.”
At the time, Roxanna reportedly told investigators a terrifying story about a mysterious random intruder who had slipped into the house. Viskocil, described by the host as a trusted family friend and neighbor, claimed he had been out fishing alone all night.
Those explanations, the host said, held together just enough in 2003 to keep both of them free.
This is one of the more chilling parts of the case, because the original scene seemed to point away from a random crime. No forced entry usually means the victim either knew the person who came inside or had no reason to fear them. In a murder like this, that small absence can become one of the loudest clues in the room.
Old Lies Began To Lose Their Shape
According to the Open Case report, the case did not break open because of a sudden DNA discovery. Instead, it began to fall apart when investigators re-examined the old file and re-interviewed witnesses.
The host said Viskocil’s ex-girlfriend eventually admitted that his late-night fishing alibi was not true.
That mattered because Viskocil had allegedly used a strange detail to explain why his clothes were wet and heavily bleached on the night of the murder. He had claimed he accidentally fell into the water while fishing.
But investigators no longer believed that story held up.
The host also pointed to a detail from Roxanna herself. On the night David was killed, before forensic teams had finished processing the scene, she reportedly told neighbors that David had been shot.
According to the Open Case narration, that was a detail only the killer, or someone who already knew what had happened inside the home, should have known at that point.
Then came the phone records.
The host said a series of calls between Roxanna and Viskocil on the day of the murder helped erase what was left of the random intruder theory. In the channel’s telling, the case shifted toward something far darker: a hidden affair and a calculated betrayal.
“This Is Not A Fishing Expedition”
After Collins asked for her attorney, the detective told her the case was not going away.
In the footage, he said the warrant for first-degree intentional homicide was not a “fishing expedition.” He emphasized that a judge had signed off on probable cause and that the case had gone through prosecutors before the arrests were made.
The detective also told Collins that the first person to talk would receive “significant consideration,” while also noting her age and her current family situation.
Collins continued to say there was nothing to tell.
The Open Case host reported that Collins was eventually released in June 2025 after posting a $500,000 cash bond, while Viskocil remained in Kenosha County Jail because he could not meet that amount.
By August 13, 2025, defense attorneys argued that the state’s case was built on old gossip and innuendo, but a court commissioner disagreed and ruled there was enough probable cause to bind both suspects over for trial, according to the host.
As of May 2026, Open Case reported that no verdict had been reached.
If convicted, both suspects face a mandatory life sentence, the host said.
The case stands out not just because of the violence of David Vanderzee’s death, but because of the time that passed before the arrests. Twenty-two years is long enough for people to grow old, build new routines, and believe the past has finally lost its grip.
But in this case, detectives said the old details did not disappear. They waited.
Growing up in the Pacific Northwest, John developed a love for the great outdoors early on. With years of experience as a wilderness guide, he’s navigated rugged terrains and unpredictable weather patterns. John is also an avid hunter and fisherman who believes in sustainable living. His focus on practical survival skills, from building shelters to purifying water, reflects his passion for preparedness. When he’s not out in the wild, you can find him sharing his knowledge through writing, hoping to inspire others to embrace self-reliance.
