Florida 1978 Cold Case Solved — Arrest Shocks Community

The last photograph of Dennis Alderman was taken on the afternoon of August 19th, 1978 at a going away party his mother had thrown for him in the backyard of their house on Chamellia Drive in Palmetto, Florida. He was 22 years old in the photograph. He was laughing at something his younger brother had said.

 He had a can of RC cola in one hand and a paper plate of his mother’s develed eggs in the other. And he was wearing a yellow t-shirt that he had won two summers earlier in a fishing tournament out on Tampa Bay. And behind him, you can see the orange tree his father had planted the year Dennis was born, full and heavy with fruit that August, the way it only ever got when the summer rains had been good.

 Dennis was leaving for a construction job in Sarasota the following Monday. He had his tools loaded in the bed of his truck and $38 in his wallet and a plan that was his and that he was proud of. He kissed his mother on the cheek at 6:30 that evening and walked out to his truck and drove south on Route 41 and no one in his family ever saw him again.

The Manatee County Sheriff’s Office eventually concluded that Dennis Alderman had left voluntarily and moved on without informing his family. A transient worker, they said, which was a category that meant the case could be set down without anyone being required to explain it. His mother, Gloria Alderman, wrote to the sheriff’s office every year on the anniversary of his disappearance for 22 years.

Every letter said the same thing. My son would not have left without calling me. He would not have left without calling me. She was right. And in the summer of 2024, 46 years after Dennis drove south on Route 41, a Dena analyst working from a cold case unit in Tallahassee read a genealogy result on a biological sample recovered from the cab of Dennis Alderman’s abandoned truck and understood for the first time whose hands had been on the steering wheel.

To understand what was lost, you first have to understand who Dennis Alderman was. He had grown up on Chamellia Drive in Palmetto in a neighborhood of concrete block houses with carports and screen porches and yards that smelled of cut grass and citrus in the summer. His father, Ry, had worked the phosphate plant south of town until a back injury in 1971 forced him onto limited duty.

And after that, Ry had done repair work, screen doors, leaky faucets, whatever the neighbors needed, out of a shed behind the house. Dennis had learned tools from his father before he could read. By the time he was 10, he could wire a ceiling fan. By 16, he could frame a wall. Ry watched his son work and told Gloria that the boy had better hands than he did, which was the highest compliment Ray Alderman knew how to give.

Dennis was the oldest of three children. His brother Kevin was four years younger and had his mother’s temper and his father’s laugh. His sister Marie was eight years younger and had been five when Dennis started at the Palmetto High School and 11 when he graduated. and she had followed him around the house that summer after graduation with the specific devotion of a little sister who has not yet figured out that brothers leave.

 He never made her feel foolish for it. He drove her to the public pool on Saturdays and let her pick the radio station in the truck and argued with her about it goodnaturedly the whole way there. He’d worked construction since the summer after graduation. Four years of it, learning the trade the way you learned it then on the job alongside men who didn’t explain things twice.

He’d saved enough money for a used truck, a three-year-old Ford F00 the color of rust and ambition, which he maintained himself with a devotion that his friends found funny. He changed its oil every 3,000 miles and kept the tires at the right pressure and touched up the paint along the rocker panels with a brush he stored in a coffee can in the shed.

He talked about the truck the way some men talk about boats. Rey, who understood this, never said a word about it. The construction job in Sarasota was a step up, a larger outfit. A foreman who had specifically recruited Dennis after seeing his work on a commercial build in Bradenton. More money, more responsibility, a crew of his own eventually if things went well.

Dennis had told his mother about it at the kitchen table the previous spring, laying it out carefully the way he always did when something mattered to him, walking her through the numbers and the timeline and the plan. Gloria had listened and then asked if he’d be coming home on weekends. He had said as often as he could.

On August 19th, 1978, the party in the backyard of Chamellia Drive went until just after dark. The neighbors came over the fence. Ray grilled chicken. Someone brought a watermelon. Dennis’s friends from the job sites drank beer and gave him a hard time about moving up in the world, which was their way of saying they were proud of him.

At 6:30, he hugged his mother and shook his father’s hand and ruffled Marie’s hair and told Kevin not to touch anything in his old room. And he got in the Ford and headed south. The last person outside his family to see Dennis Alderman that evening was a woman named Doris Hutchkins, who ran a small bait shop and tackle supply on Route 41 south of Palmetto.

She had sold Dennis a Coke from the cooler near the register at approximately 7:15. She remembered him because she knew the family. Rey had replaced her shop screen door the previous spring and because Dennis had seemed in good spirits, joking with her about the job and the drive. He was heading south.

 He was maybe 45 minutes from Sarasota. He was never seen again. At 6:00 on Monday morning, August 21st, the Sarasota construction foreman called Chamellia Drive to ask where Dennis was. Gloria Alderman held the phone and said she didn’t understand. Dennis had not reported to the job. He had not called. His tools had not arrived.

Ray drove Route 41 south from Palmetto that morning, watching both shoulders, pulling over twice to look at things that turned out to be nothing. He called the Manatee County Sheriff’s Office from a gas station payphone south of Ellington at 9:30. He was told to come in and file a report. He did. What investigators found three days later was the Ford F-100 parked on a limestone access track off a county road west of Parish, Florida, 5 miles off Route 41, deep enough in the Palmetto scrub that it could not be seen from the road. The

truck was locked. The tools were still in the bed, covered with the tarpollen Dennis had tied down himself before the party. His wallet was in the glove box. $38 still in it. His work gloves were on the passenger seat. There was an open bag of pork rind from the bait shop on the dashboard, half eaten.

 The keys were not in the truck. They were never found. The truck had been moved from Route 41 to that access track by someone who knew the road was there. It was not visible from any public thoroughfare. The landscape investigator noted that the driver would have had to know where to turn. Crime scene technicians processed the interior.

 They collected fingerprint lifts from the steering wheel, the door handles, the glove box. They found on the headliner fabric above the passenger seat, a faint smear they logged as an unidentified substance, dark, possibly organic, and collected a sample. They found a single thread of fabric on the passenger seat door latch, not consistent with the clothing Dennis had been wearing.

 Dennis Alderman’s body was found on September 3rd, 1963, 13 days after the truck, in a shallow depression in the Palmetto scrub 200 yard from the access track, partially concealed by undergrowth. The medical examiner determined he had been killed on or near the night of his disappearance. The cause of death was blunt force trauma.

 The lead investigator was a detective named Sergeant Carl Brosten of the Manatee County Sheriff’s Office. Brosman was 44 years old, a Bradenton native who had worked the county his entire career. He was methodical and unhurried and the kind of investigator who came back to a case file on Sunday afternoons when the office was quiet and he could think without interruption.

 He told Rey and Gloria Alderman when he met with them after the body was recovered that he was going to find out who had done this. He told them directly without softening it. He developed four persons of interest in the first 6 weeks. The first was a man named Terry Voss, who had worked on the same Bradenton job site as Dennis and had been let go two weeks earlier over a dispute about materials theft.

Voss had an alibi. He had been in Hillsboro County that night at a cousin’s birthday, and it checked out through receipts and multiple witnesses. He was eliminated in the second week. The second was a man from Sarasota with a prior conviction for assault who had been seen on Route 41 south of Palmetto on the evening of August 19th.

Identified by a different witness at the same bait shop. He was interviewed twice. The fingerprint lifts from the truck’s interior did not match him. He was eliminated. The third and fourth leads dissolved the same way. Circumstantial, plausible on the surface. unsupported by the physical evidence when it came back from the lab.

The fingerprints from the steering wheel and the door handles produced no database matches. In 1978, the Florida fingerprint database was substantially smaller than it would become, and the national automated system did not yet exist in the form that could have helped. The prints were preserved and filed.

 The fabric thread from the door latch was analyzed and determined to be from a cotton polyester blend, a common weave in the late 1970s, narrowing nothing. The substance from the headliner was identified as biological in origin. A blood type was extracted, type AB, rare, found in approximately 4% of the population.

Dennis Alderman was type O. The blood was not his. That 4% narrowed the field. In 1978, it was not enough. By the summer of 1979, Carl Broman’s active case notes on Dennis Alderman had grown to 214 pages. By the end of 1980, the additions had slowed. By 1983, Broden was working seven other active cases, and the Alderman file was being reviewed quarterly rather than weekly.

The leads had run out. The evidence had no technology to meet it. Gloria Alderman began writing her annual letters to the sheriff’s office in 1979. She wrote them on the same yellow legal pad she kept in the kitchen drawer in her careful even hand and mailed them the third week of August every year. The week of the party, the week before he had driven away. She wrote 22 of them.

By 1990, 12 years had passed. Kevin Alderman had married and had two sons and lived in Bradenton and drove the same stretch of Route 41 south to work every morning, passed the same Palmetto scrub, and never stopped thinking about it. Marie had moved to Orlando and worked as a dental hygienist and had a daughter she had named Gloria after their mother, a fact that made the elder Gloria cry the first time she heard it.

Ray Alderman died in 1993. He had spent the last 15 years of his life with the knowledge of what had happened to his son and without the knowledge of why or who. And those two things together had done something to him that the people who knew him could see, but not name. He had kept working.

 Screen doors, faucets, whatever was needed until his hands wouldn’t cooperate anymore. He had never stopped. The orange tree in the backyard of Chamellia Drive bore fruit every summer that the rains were good. Gloria stayed in that house until 2004 when her health made it impractical. She moved in with Kevin and his family in Bradenton.

 She brought one photograph from the house. The one from the party. Dennis laughing. The orange tree behind him. The can of arsa. She put it on the windowsill in her room at Kevin’s house where the morning light hit it. She died in 2008, 3 weeks before her 80th birthday. She had not received an answer to her letters. The evidence from the alderman case had been in storage through three facility changes by 2005.

During a 2009 inventory, a cold case unit analyst named Patricia Mercer reviewed the property log and noted the headliner sample still in its original evidence tube. The biological material preserved by the climate controlled storage conditions of the most recent facility and flagged it for potential DINA extraction.

The note went into the file. Budget and workload priorities meant it was not acted upon for 4 years. In 2013, Patricia Mercer submitted the headliner sample to the Florida Department of Law Enforcement Forensic Biology Unit. The extraction succeeded. A full DINA profile was obtained from the biological material collected 35 years earlier.

 The profile was run against Kodus, the national DNA database, and returned no match. The profile sat in the database waiting. In 2021, the Florida Department of Law Enforcement authorized the use of forensic genealogy for cold case homicides where traditional database searches had failed. The alderman case was among the first batch submitted.

 The DINA profile from the headliner was uploaded to public ancestry databases in early 2022. Every case on this channel represents weeks of research, verifying records, and piecing together lives that deserved better. If you want us to keep uncovering the truth behind stories like this one, take a second to like this video and subscribe.

 Drop a comment telling us where in the world you’re watching from. Now, let’s get back to Dennis. The genealogy work took 14 months. The partial matches that came back suggested a family concentrated in the Manatee and Sarasota County corridor. people who had been in this part of Florida for generations. The analyst building the trees worked backward through great-grandparents and forward through their descendants, branch by branch, eliminating lines that didn’t converge, following the ones that did.

In April of 2023, the tree reached its narrowest point. The Dena profile pointed to a single living candidate, a man named Wallace Greer, 71 years old. a retired building contractor, a resident of Bradenton, Florida, where he had lived his entire life. The investigator assigned to the referral was a cold case detective named Sergeant Yolanda Ferris of the Manatee County Sheriff’s Office.

 She pulled every available record on Wallace Greer before she drove anywhere or made any call. What she found was a quiet and settled life. 60 years of it documented in the ordinary paper trail of a man who had never once been required to explain himself to a court. Greer had been born in Manatee County in 1952. He had started in construction in his late teens and built a modest contracting business over the following decades.

 Mostly residential work, additions, remodels. the kind of steady local trade that kept a man busy without making him conspicuous. He had been married since 1982. He had three adult children. He had served on the board of his homeowners association for six years and coached his son’s little league team in the early 1990s and was by every account in every document Ferris could locate.

 A man who had spent 40 years being exactly what he appeared to be. She pulled the 1978 case file. She went through every page. Wallace Greer’s name did not appear anywhere in the original investigation. She pulled the construction permit records for Manatee County from 1975 through 1980. Wallace Greer had taken out seven permits in that period, all in the county, all residential.

One of them, a permit for a foundation pour and framing on a speck house off County Road 675 west of Parish, had been filed in July of 1978. The job site was less than three miles from the limestone access track where Dennis Alderman’s truck had been found. Ferris put the permit record down and sat for a moment.

 She pulled the county road maps from 1978. The limestone access track where the truck had been concealed was not marked on any public map. It appeared on an internal county maintenance survey from 1974 as a service road for a drainage easement. To know that road was there, you would have had to have worked in that area. A surveillance operation was authorized in May of 2023.

Investigators watched Wallace Greer for 6 weeks. He was still working, semi-retired, he called it, taking the occasional small job to stay busy. He drove a white pickup truck. He had lunch on Thursdays at a diner on 14th Street in Bradenton, where he had been going since the 1980s. The waitress knew his order, and he always sat at the same table by the window.

 He appeared comfortable. He appeared settled. He had the specific ease of a man who has not been looking over his shoulder for a very long time. On June 18th, 2023, investigators obtained a court authorized DINA sample from a coffee cup Greer left at the diner table. It went to the Tallahassee laboratory the same afternoon.

 The result came back in 12 days. Wallace Greer’s Dena matched the profile extracted from the headliner of Dennis Alderman’s Ford F100. The match probability was one in greater than 400 billion. He was arrested at his home in Bradenton on the morning of July 9th, 2024, 46 years after Dennis had driven south on Route 41. His wife was home.

 She stood in the doorway of the house and watched the sheriff’s vehicles in the driveway and did not speak. His neighbors, a retired couple who had lived next door for 17 years, who had shared a fence line and borrowed each other’s tools and had Greer and his wife over for dinner on holidays, watched from their porch. They said afterward that they had not been able to move.

 The investigation in the months between the Dina result and the arrest had produced additional evidence. A former employee of Greer’s contracting business, a man now in his 60s who had worked for Greer briefly in the late 1970s, told investigators when they came to him that in the summer of 1978, he had heard Greer argue with a young man at a job site near Parish heatedly about what he couldn’t say he fully understood.

He had not connected it to the alderman case because he had not known there was an alderman case to connect it to. He had just remembered a summer and an argument and a young man with good tools who he had not seen again. The former employee identified Dennis Alderman from a photograph. At trial in the spring of 2025, the prosecutor presented the Dena evidence, the permit record, the road map, the former employees testimony, and cell tower records from a mobile phone registered in Greer’s wife’s name that placed a

device in the vicinity of the parish access road in the early hours of August 20th, 1978. records that had been subpoenaed from the carrier’s archived storage, which retained records from that era in digitized form as part of a regulatory compliance program. The defense contested the genealogy methodology and the chain of custody of the headliner sample.

The jury deliberated for 9 hours. Wallace Greer was convicted of murder in the first degree on April 3rd, 2025. He was sentenced to life without the possibility of parole. He made no statement at sentencing. His wife, who had sat behind the defense table at every session of the trial, was not in the courtroom on sentencing day.

Kevin Alderman was there. He was 62 years old. He had his father’s laugh and his mother’s letters, all 22 of them, kept in a shoe box that Gloria had left with him when she moved out of the house on Chamellia Drive. He had read every one of them in the weeks before the trial. He sat in the front row of the gallery and held his wife’s hand, and when the verdict was read, he did not make a sound.

 He had been holding that sound back for 46 years. He held it back one more time. After the sentencing, a reporter asked Kevin what he wanted people to know about his brother. He thought about it for a moment. He said that Dennis had a truck he loved that he kept perfect and that he always let Marie pick the radio station and that he had $38 in his wallet and a plan he was proud of and that none of it should have been taken from him.

He said their mother had been right. He said she had always been right. He said that was the thing he most wanted people to know. Dennis Alderman was 22 years old. He had better hands than his father, which was the highest compliment Ray Alderman knew how to give. He ruffled his little sister’s hair and told his brother not to touch anything in his old room.

 And he kissed his mother on the cheek. and he drove south into the August evening with $38 and a plan that was his. Gloria Alderman wrote 22 letters. She never received an answer she could use, but she was right. She had always been right. And the answer came from a smear of blood on a headliner, from a Dena profile that waited 11 years in Cotus before genealogy gave it somewhere to go.

 from a permit record and a county road map and a former employee who remembered a summer argument and a young man with good tools. The orange tree on Chamellia Drive has been gone for years. The house was sold twice after Gloria left it. But the photograph from the party, Dennis laughing, the tree full behind him, the arks cola in his hand, that photograph is still on a windowsill in Bradenton.

Kevin kept it in the same spot his mother had kept it, where the morning light hits it. There are questions that stay with a case like this one. How many families spent decades writing letters that went unanswered, not because investigators didn’t care, but because the technology to answer them simply didn’t exist yet? And how many of those families never lived to see it arrive? What does it mean that the evidence sat in a tube in a climate controlled room for 35 years waiting for a database and a methodology and a submission that

didn’t come until 2022? And for Kevin and Marie and the children they raised who grew up knowing the shape of an absence but not its cause is what they have now closure or is it something else entirely, something that doesn’t have a clean name? Leave your thoughts in the comments. We want to know what you think and we want to know where in the world you’re watching from.

 Every case on this channel represents weeks of research, verifying records, and piecing together lives that deserved better. If you want us to keep uncovering the truth behind stories like this one, take a second to like this video and subscribe. More cases are waiting in the description below. Justice found Dennis Alderman after 46 years.

 A smear of blood on a headliner. A submission that almost didn’t happen. A tree built name by name until it had nowhere left to go but one man eating lunch at the same diner table he’d used for 40 years. If you believe the truth is worth pursuing, no matter how long it takes, subscribe. Thank you for being here.