Cedar Rapids Iowa 1979 Cold Case Solved – Arrest Shocked Community

It’s 4:00 a.m. on December 20th, 1979. A Cedar Rapids police officer sweeps his flashlight across an empty frozen parking lot outside a suburban Iowa mall. Most of the cars are gone, but one isn’t. A tan and green Buick Electra parked alone near the JC Penney entrance, exactly where it had been for over 6 hours.

 The officer walks closer through the frosted glass. He sees something that stops him cold. A body slumped across the front seat. Blood everywhere and clumps of white and brown fur scattered across the dashboard, torn from a coat during what was clearly a violent struggle. There are no footprints leading away. No blood on the pavement outside.

 Whatever happened inside that car happened only inside that car in a busy, well-lit mall parking lot with nobody seeing a thing. It would take 39 years, three generations of detectives, and a discarded drinking straw at a pizza restaurant to answer the question that Cedar Rapids would ask for four decades. Who killed Michelle Martino? Before she became a name attached to one of Iowa’s most infamous unsolved murders, Michelle Martino was by every account an entirely ordinary 18-year-old with an entirely bright future ahead of her. Born on

October 6th, 1961, she was the younger daughter of Albert and Janet Martino, a well- reggarded family in Cedar Rapids. She was a senior at Cedar Rapids Kennedy High School, where teachers and classmates remembered her as above average academically and where she filled her schedule with the kind of activities that suggested a girl comfortable in front of people.

 She twirled baton for the school’s twirling squad, and she sang in the Kennedy concert choir, serving as its treasurer. She was blonde, outgoing, and by most descriptions, strikingly attractive. But those who knew her best painted a slightly more private picture underneath the extracurricular resume. Her older sister, Janelle Stonereaker, later revealed that Michelle didn’t have one single best friend she confided in in at school.

 Instead, her mother filled that role. Whatever was going on in Michelle’s life, good or bad, it was Janet Martino who heard about it first. And not everything at Kennedy High was smooth. At one point, a group of female students had threatened Michelle over something as small as which building exit she used. A reminder that even well-liked teenagers navigate social friction most adults never see.

 But by December of 1979, Michelle’s focus wasn’t on high school politics. She had a job at the newly opened Westale Mall, and she had already been accepted to Iowa State University, where she planned to study interior design. Her future was mapped out. She just had a few more months of senior year left to get through. She never got the chance.

 On the evening of Wednesday, December 19th, 1979, Michelle attended the Kennedy Concert Choir’s annual banquet at the Sheran Inn in Cedar Rapids. She dressed for the occasion a black jersey dress, a black scarf, black panty hose heels, and over it all, a waistlength rabbit fur jacket in white and brown.

 She carried a brown leather purse and inside her wallet was roughly $180 in cash. Money she intended to use to finish paying off a winter coat she’d put on layaway at Westdale Mall. Before she left the banquet, she tried to find company for the trip. She asked a teammate from her twirling squad to come along. The teammate said no.

 She asked someone else who initially agreed, then backed out. So Michelle did what countless teenagers have done a thousand times without a second thought. She drove to the mall by herself in her family’s tan and green 1972 Buick Electra. At Westdale Mall, she wasn’t alone for long. Witnesses placed her moving through several stores, chatting with acquaintances and mall employees.

 At some point that evening, she crossed paths with her ex-boyfriend Andy Sidell. The two had dated for roughly 2 years before breaking up. Witnesses who saw the encounter described it as brief and notably non-confrontational. Nothing about it stood out as unusual. The last confirmed sighting of Michelle Martino alive came at approximately 900 p.m.

 Witnesses saw her standing alone outside a jewelry store in the mall concourse. After that, nothing. No one saw what happened next. But somewhere in the hours that followed inside that same Buick Electra, she’d driven alone to the mall. Michelle Martino’s life ended in one of the most violent ways imaginable, and her family wouldn’t find out until the middle of the night.

 When Michelle didn’t come home after the mall closed at 900, her family’s concern built slowly into alarm. Her father, Albert Martino, began driving the road she typically used, checking places she might have stopped. When that search turned up nothing, he called the Cedar Rapids Police Department. It was 2:00 a.m. on December 20th.

 Patrol officers fanned out to check commercial districts and parking lots across the city. 2 hours later at 4:00 a.m., an officer found the family’s Buick Electra still sitting in the northeast lot of Westale Mall near the JC Penin entrance, right where Michelle had parked it 7 or 8 hours earlier. What that officer discovered inside would define the rest of his shift.

 In the next four decades of a police department’s history, Michelle was slumped over the front passenger seat. There was extensive blood inside the cabin and there was visible severe trauma to her upper body and face. The officer checked for a pulse, found none, and secured the vehicle as a crime scene. But it’s what investigators noticed outside the car that would shape the entire direction of the case for the next 39 years.

 When crime scene technicians processed the Buick Electra, they made an observation that would become central to understanding exactly what happened that night. Inside the car, the scene was catastrophic. Blood soaked into the front bench seat, spattered across the dashboard, pulled on the door trim and gearshift lever.

 Clumps of Michelle’s rabbit fur coat torn loose in the struggle were scattered throughout the front seat. But outside the car, nothing. No blood on the exterior panels. No footprints, no drag marks, no signs that anyone, victim or attacker, had ever stepped out onto the asphalt during the attack. That absence told investigators something critical.

 The entire assault happened inside the enclosed cabin of the car. Whoever did this hadn’t dragged Michelle into the vehicle from somewhere else. He had gotten in with her or already been inside and the violence had unfolded entirely within that small sealed space in a mall parking lot with no one outside seeing or hearing a thing.

 The postmortem exam conducted the morning of December 20th revealed the scale of the attack. Michelle had suffered 29 separate sharp force wounds concentrated on her face, neck, and chest. Several of the wounds pierced her lungs. The fatal injury was a deep puncture that severed her aorta while her heart was still beating, causing rapid, massive internal bleeding.

 But the autopsy revealed something else, something that would matter enormously, though nobody could have known it at the time. Pathologists documented severe defensive wounds across the palms and fingers of both of Michelle’s hands. She had fought back hard, and based on the sheer volume of blood at the scene, the medical examiner made an educated forensic prediction.

 As the weapon grew slick with blood during the struggle, the killer’s own hand likely slipped down the handle and onto the blade itself, meaning the attacker probably cut his own fingers or palms in the process. It was a detail buried in a 1979 autopsy report. Nobody would understand its true significance for another 39 years.

 Robbery clearly wasn’t the motive. Michelle’s purse was found intact. Her $180 in cash untouched. There was no assault. She remained fully clothed and no evidence of it was found. What investigators were left with was a brutal personal feeling attack with no obvious motive, no witnesses, and critically no fingerprints.

 Technicians recovered clear textured chevron style glove impressions in blood and dust on the steering wheel, gear shift door handles, keys, and light switch. The killer had worn rubber gloves through the entire encounter and through operating the vehicle afterward. Whoever did this had planned well enough or panicked precisely enough to leave almost nothing behind. Almost.

 Detective Harvey Deninger led the Cedar Rapids Police Department’s original investigation and the department through everything 1979 policing had at the case. They canvased Westdale Mall, Kenny High School, and the surrounding neighborhoods. They interviewed hundreds of people. Naturally, attention turned to Michelle’s ex-boyfriend, Andy Sidell.

He dated her for 2 years. He was confirmed to be at Westdale Mall that same night. And at her funeral, witnesses saw him crying and visibly shaking near her casket behavior that fairly or not made him a magnet for public suspicion. But Cido cooperated fully with investigators, provided a verifiable timeline, and submitted to testing early on.

 When DNA technology eventually caught up decades later, it conclusively cleared him as the source of the biological evidence at the scene. Investigators also had a composite sketch built from eyewitness accounts of a man loitering near the JC Penney entrance the night of the murder. A white male late teens to early 20s, roughly 6 ft tall with short to medium curly brown hair.

 That sketch generated hundreds of tips, every single one after alibi checks led nowhere. Here’s the problem investigators in 1979 were up against. And it’s worth understanding just how limited their tools really were. The killer’s rubber gloves eliminated fingerprint evidence, the single most reliable identification method available at the time.

 Forensic corology in 1979 could only sort blood into broad categories like type A, B, or O. Nothing close to individual genetic identification. There were no eyewitnesses to the actual stabbing because it happened entirely inside a closed car in a dim section of parking lot. And because there was no and nothing stolen, there wasn’t even a behavioral pattern to cross reference against known offenders.

 Over the following two decades, leads dried up. Original detectives retired. The file moved into cold case storage. Every December 19th, local media would run an anniversary piece, hoping someone somewhere would remember something new. Nobody ever did, but one thing the Cedar Rapids Police Department did right. One decision made in the depths of a case gone cold would end up being the entire reason this story doesn’t end in an unmarked file cabinet.

 They kept the evidence, all of it. Michelle’s dress, the blood scrapings from the gearshift, sealed, logged, and waiting for a kind of science that didn’t exist yet. In 2006, cold case investigators pulled Michelle’s black jersey dress and the gearshift blood scrapings out of storage and sent them to the Iowa Division of Criminal Investigation Crime Laboratory.

This time they weren’t looking for a blood type. They were looking for DNA. The lab isolated a complete single source male DNA profile from a specific stain on the dress. A sample technicians designated stain F5. A second sample from the gear shift scrapings came back as a mixture, but the same male profile from stain F5 was identified as the major contributor.

 In other words, this wasn’t a fluke or a contamination artifact. The same unknown man’s DNA showed up in two different places at the crime scene. CRPD uploaded that profile into Cotus, the FBI’s national DNA database in 2006. And then nothing, no hits, sweep after sweep, year after year. The system came back empty. It meant one thing.

 Whoever left that blood had never been arrested for a felony serious enough to require DNA collection. He wasn’t in the system. He might never be in the system. So detectives did it the hard way. Over the following decade, they manually collected reference swabs from more than a 100 potential suspects, comparing each one against stain F5.

 Every single one came back negative. 100 names, 100 dead ends, and a DNA profile that stubbornly refused to attach itself to anyone. By 2015, the case had a new lead detective. And this one came with a personal connection that almost sounds too fitting to be true. Detective Matt Deninger, the son of the original 1979 lead investigator Harvey Deninger, took over the cold case his own father had worked decades earlier.

 And Matt Deninger was about to reach for a tool that hadn’t existed when his father first stood inside that bloodstained Buick. In 2017, with Cotus exhausted and manual suspect swabs going nowhere, Detective Deninger contacted Parabon Nanolabs, a Virginia based firm specializing in forensic DNA phenotyping.

 Parabon took the raw genetic data locked inside Stain F5 and used it to predict the physical characteristics of the man it belonged to. Their snapshot report described a Caucasian male of northern European descent. Fair skin, blue eyes, blonde hair with specific identifiable facial structure traits. It was a face built entirely out of biology, but a predicted appearance still isn’t a name.

 So in 2018, CRPD authorized the next step, investigative genetic genealogy. Parabon uploaded the genetic profile to GED match, a public database where ordinary people upload their own consumer DNA test results to search for relatives, the same kind of database people use to find long-lost cousins or fill in a family tree. And it worked.

 Gid match returned a partial familial match to a woman named Brandy Jennings living in Vancouver, Washington. someone with no known connection to Iowa, no known connection to Michelle Martino, and almost certainly no idea she was about to become a critical thread in a decades old murder investigation. Detective Deninger then did something that sounds almost old-fashioned for a case cracked open by cuttingedge genetics. He became a genealogologist.

He spent months combing through census records, birth registers, marriage certificates, and obituaries, painstakingly reconstructing Brandy Jennings family tree back through four separate sets of great great grandparents. Eventually, one branch of that sprawling tree led him somewhere very specific to an Iowa woman named Janice Burns.

 Janice Burns agreed to voluntarily provide a DNA sample to police. When it came back, the lab confirmed something enormous. The man who left blood at the 1979 crime scene was a close male relative of Janice Burns, specifically her first cousin. And that single genetic relationship narrowed 39 years of investigation, 100 cleared suspects, and an entire genealogical tree down to just three men.

 Three brothers who grew up together in Manchester, Iowa, Donald Burns, Kenneth Burns, and Jerry Lynn Burns. One of these three men had killed Michelle Martino. Now, investigators just had to figure out which one without tipping any of them off. To identify which brother’s DNA matched stain F5, Cedar Rapids detectives couldn’t simply knock on doors and ask for a swab.

 Not without risking the destruction of evidence, or worse, tipping off the very person they were looking for. So, they turned to covert surveillance, watching each brother in public until he unknowingly left something behind. Donald Burns discarded a plastic drinking straw while investigators quietly watched. It was collected and tested. He wasn’t a match.

Kenneth Burns discarded a toothbrush. It too was collected and tested. Also not a match that left one brother, Jerry Lynn Burns. Surveillance officers followed Jerry and his adult son to a Pizza Ranch restaurant in Manchester, Iowa, sitting down in a nearby booth as if they were just two more customers.

 They watched as Burns drank his soda through a clear plastic straw. When he finished his meal and left, officers moved in, bagged the discarded cup and straw, and rushed it to the Iowa DCI crime laboratory. The saliva on that straw held a full male DNA profile. And when the lab compared it against Stain F5, the blood on Michelle Martino’s dress, sitting in evidence storage for 39 years, it matched.

 Not consistent with not similar to a match with the probability of it belonging to an unrelated random person calculated at less than 1 in 100 billion independent testing by Bod Technology confirmed the same profile also matched the major contributor from the Buick’s gear shift scrapings. Two separate labs, two separate crime scene samples, one man.

 On December 19th, 2018, exactly 39 years to the day after Michelle Martino’s murder, Detective Matt Deninger and his team walked into Advanced Coding Concepts. Jerry Lynn Burns’s business in Manchester, Iowa. Burns was 65 years old. In 1979, he’d been 25, living roughly an hour north of Cedar Rapids with no criminal record, no COTUS entry, and by every visible measure, no connection whatsoever to Michelle Martino.

 Detectives sat down with him in his own office for a non-custodial interview, recording the entire conversation on a camera hidden inside a coffee mug. When they told him his DNA matched blood found on a murder victim’s dress from four decades earlier, Burns denied everything. He said he’d never been to Westdale Mall that night.

 He couldn’t explain how his blood had ended up in that car or on that dress. But two things happened in that room that detectives couldn’t ignore. First, unprompted, Burns brought up Jod Heisentrude, a TV news anchor who vanished without explanation from Mason City, Iowa in 1995, a name with no established link to the Martino case at all.

 And second, detectives could see the visible scars across both of Burn’s hands and arms. scars consistent with the kind of cuts a person might sustain if their hand slipped down a blood sllicked knife handle during a violent struggle. It was the same detail the 1979 medical examiner had predicted, sitting untested and unconfirmed for 39 years, now staring investigators in the face on a living man’s own hands.

 Cedar Rapids police arrested Jerry Lynn Burns for firstdegree murder that same day. A follow-up search warrant secured a direct court authorized buckle swab, which reconfirmed the exact match to the crime scene DNA, closing off any possible legal argument that the straw alone wasn’t enough. But an arrest wasn’t a conviction, and the defense Burns assembled was ready to fight over exactly how that DNA had been obtained in the first place. The state of Iowa v.

Jerry Lynn Burns went to trial in the Iowa District Court for Scott County in Davenport, moved there after a defense motion for change of venue, citing heavy pre-trial media coverage. Back in Lynn County, Judge Fay Hoover Grindy presided. Before the trial even began, Burns defense team, Kathleen Zelner, Elizabeth Arags, and Nicholas Curran filed motions to keep key evidence away from the jury entirely.

 their central argument that police collecting Burns DNA off an abandoned drinking straw without a warrant amounted to an unconstitutional search under the Fourth Amendment. Judge Hoover Grind disagreed, ruling that once Burns walked away from that straw, he’d abandoned it and any expectation of privacy in it in a public space.

 The defense had more success with a second motion. Digital forensics on hard drives seized from Burn’s business had uncovered internet search history from 218 involving deeply disturbing terms, searches related to violence against blonde women, assault, strangulation, and worse. The judge agreed with the defense that because these searches occurred nearly 40 years after the murder, introducing them at trial risked being unfairly prejuditial without proving anything directly connected to 1979.

That evidence was excluded. At trial, prosecutor Nick Maybanks built the state’s case around one thing, mathematical certainty. Forensic analysts from the Iowa DCI lab and Bodde Technology walked the jury through the DNA evidence in its staggering statistical improbability, less than 1 in billion.

 The dress, the gearshift scrapings, photographs of the glove impressions, and documentation of Burnt’s scarred hands all went before the jury. The defense didn’t dispute the science. They couldn’t. Instead, they argued that DNA proved contact, not intent, and not that Burns had been inside Westale Mall at the precise moment of the murder.

 They pointed to the complete absence of any eyewitness placing him there, the lack of any established motive, and raised questions about a chain of custody stretching back nearly four decades. The prosecution also called a jailhouse informant, Michael Allison, who had been incarcerated with Burns after his arrest.

 Allison testified that Burns made statements to him suggesting direct involvement in the crime. The defense pushed back hard, cross-examining Allison about his own motivation in a plea deal in an unrelated federal case and asked the judge for a special jury instruction warning jurors to weigh informant testimony with extra scrutiny. The judge declined, opting instead for standard instructions.

 On February 24th, 2020, after closing arguments, the jury deliberated for less than 3 hours. They found Jerry Lynn Burns guilty of first-degree murder. On August 7th, 2020, Judge Hoover Grind sentenced him to life imprisonment without the possibility of parole, the mandatory penalty under Iowa law for that conviction.

 The case was closed, but Burns wasn’t done fighting it. Burns appealed his conviction to the Iowa Supreme Court and the case, formerly known as State v. Burns, became something bigger than one murder case. It became a test of exactly how far police can go when using a stranger’s own genetic material against them. Burns appeal argued that extracting DNA from something as ordinary as a discarded straw amounted to an unlawful search and that human genetic material is so sensitive, so deeply personal, that individuals retain a right to privacy in

it, even after the physical object carrying it has been thrown away. He also renewed his objection over the denied jury instruction regarding the jailhouse informant. On March 31st, 2023, the Iowa Supreme Court ruled and the decision was close. In a 5-2 ruling written by Justice Matthew May, the majority sided with the state.

 They held that under longestablished Fourth Amendment law, a person has no reasonable expectation of privacy in something voluntarily left behind in a public place. In this case, a cup and straw at a restaurant table. Once Burns walked out of Pizza Ranch, he gave up any privacy claim to what he left on that table.

 The court also emphasized that the DNA analysis performed was narrowly limited to comparing identity markers, not probing his private medical history or broader genetic makeup. But two justices, Matthew McDermott and Dana Oxley, dissented, and their argument is worth sitting with. They contended that human DNA is fundamentally different from an ordinary piece of trash because it carries deeply private biological information about a person and their entire genetic family.

 In their view, covertly collecting and analyzing it should require a warrant grounded in probable cause, regardless of where the physical sample was found. Burns took the fight one step further, petitioning the United States Supreme Court for review. In August 2023, that petition was denied. The Iowa ruling stood. Jerry Lynn Burns remains incarcerated at the Iowa State Penitentiary in Fort Madison, serving his life sentence with no possibility of parole ever.

 For Michelle Martino’s parents, Albert and Janet, the wait for answers never actually ended. Both of them died before 2018 before genetic genealogy ever led investigators to the Burns family, meaning neither parent lived to learn who had killed their daughter or why. They spent decades cooperating with police, hoping, and ultimately not getting the resolution they needed most.

 It fell to Michelle’s sister, Janelle Stonereaker, and her husband, John, to represent the family through the arrest, trial, and appeals that their parents never saw. At Burn’s sentencing in August 2020, John Stonereaker delivered a victim impact statement that captured something no verdict could fully repair.

 that while the legal system had finally delivered accountability, the grief Michelle’s parents carried to their graves was permanent. Justice had arrived, it had simply arrived decades too late for the two people who needed it most. The murder had also reshaped the broader community in ways that outlasted the original investigation itself.

 In the aftermath of December 1979, women across Cedar Rapids in eastern Iowa changed their everyday habits, checking under their cars before getting in, avoiding solo trips at night, traveling in pairs. A crime committed in a well-lit suburban mall parking lot had made the entire idea of safe, familiar places feel less certain.

 And when Jerry Lynn Burns was finally arrested in 2018, the shock wasn’t just that the case had been solved. It was who had been solved. Not a drifter, not a stranger passing through. A business owner who had lived quietly, unremarkably, in Manchester, Iowa for nearly 40 years, running his own company, raising a family, while the DNA and a police evidence locker sat waiting for the technology to catch up to him.

 The Martino case is now studied as a landmark example of what investigative genetic genealogy can do when traditional forensics run out of road. It shows how a single stain preserved correctly for four decades can eventually unravel through a public genealogy database never designed for criminal investigations. It shows how a father and son detective team separated by 36 years can each play their part in the same unfinished case and through state vurns.

 It shows how the courts are still actively working out the rules for a technology that didn’t exist when Michelle Martino died. rules about what privacy even means when the evidence is your own DNA. Left behind without you ever realizing it. Michelle Martino never got to walk into Iowa State University. She never got to use that winter coat she was paying off in layaway.

 But the case that carried her name became one of the reasons law enforcement across the country now looks at genetic genealogy not as a novelty but as one of the most powerful tools available for solving the cases everyone else had given up on. If a discarded straw at a pizza restaurant could crack a case that sat frozen for 39 years, you might be wondering just how many other unsolvable cold cases have quietly been reopened by the same genetic genealogy technique and what happened when investigators finally caught up to the people responsible. That’s exactly the

case I’m breaking down next. So, if you want to see how far this method has really gone, that video is waiting for you right now.