61 loud impact sounds captured in the darkness
In Las Vegas, the death of a 61-year-old homeless woman named Marceline Biasini has drawn a 17-year-old student into the machinery of justice, raising quiet questions about what goes unseen on city streets and what accumulates, unaddressed, in young lives. Authorities allege that Dennis Geiggar — expelled, enrolled in anger management, and placed near the scene by surveillance evidence — beat Biasini to death in the early hours of April 21. The case reminds us that vulnerability and volatility, when they meet in the dark, can produce irreversible consequences for both the forgotten and the unformed.
- A woman who had nowhere to sleep was found beaten to death on a Las Vegas sidewalk, her injuries so severe the coroner ruled it a homicide by blunt head trauma.
- Surveillance audio captured a scream followed by 61 distinct impact sounds — a chilling acoustic record of violence that cameras could not directly see.
- A 17-year-old with a documented trail of anger-driven incidents — attempted arson, punching walls, expulsion — was arrested two weeks later, his shoes testing presumptively positive for blood.
- Geiggar denies the charges, but his alibi is contradicted by store footage, and DNA testing on the blood evidence remains pending.
- The case sits unresolved at the intersection of juvenile accountability, forensic evidence, and the chronic invisibility of homeless lives lost to street violence.
On the morning of April 21, Marceline Biasini — 61 years old and living on the streets of Las Vegas — was found dead on a sidewalk outside a local business. The Clark County coroner determined she had died from blunt head trauma. She had been sleeping in the area regularly.
Two weeks later, police arrested Dennis Geiggar, a 17-year-old who had been expelled from Valley High School in January following an alleged attempt to set a fire on campus. Before that, he had been documented punching walls and trash cans and was enrolled in anger management classes. Surveillance footage from the night of the attack showed a figure in a red hooded sweatshirt and Vans shoes — clothing consistent with what Geiggar had worn at school — near the area where Biasini slept.
The cameras could not capture the attack directly, but their audio told a stark story: a scream, then approximately 61 loud impact sounds in rapid succession. At the scene, investigators recovered bloody footwear impressions. Geiggar's Vans shoes tested presumptively positive for blood, though DNA analysis was still pending at the time of his arrest.
Geiggar acknowledged being near a 7-Eleven in the early morning hours but denied entering the store — a claim undermined by the store's own footage. He offered no explanation for the blood on his shoes. He was charged with a single felony count of open murder and has not been convicted. DNA results and legal proceedings remain ongoing.
On the morning of April 21, a woman named Marceline Biasini was found dead on a sidewalk outside a Las Vegas business, her body showing signs of severe trauma. She was 61 years old and had been living on the streets in that neighborhood. Police arrived just after 8 a.m. The Clark County coroner would later determine she had died from blunt head trauma—a homicide.
Two weeks later, on May 5, authorities arrested a 17-year-old high school student named Dennis Geiggar and charged him with her murder. What emerged from police records and surveillance footage painted a picture of a young man with a documented pattern of violent impulses and a night that ended in an older woman's death.
Geiggar had been expelled from Valley High School in January after allegedly attempting to set a fire on campus. Before that expulsion, he had accumulated a record of incidents in which anger had driven him to punch walls and trash cans. He was enrolled in anger management classes. According to police, his physical description matched that of a suspect captured on nearby surveillance cameras wearing a red hooded sweatshirt and Vans shoes—the same type of clothing Geiggar had been seen wearing at school.
The surveillance evidence was fragmentary but damning. Video from a nearby 7-Eleven showed someone in that red hoodie and those shoes, though footage from inside the store did not show Geiggar present during the time he claimed to have visited with his older brother around 1 to 2 a.m. More critically, surveillance cameras positioned near where Biasini slept could not capture the actual moment of the attack—the precise location was blocked from view. But the audio recording on those cameras picked up what happened next: a scream, followed by approximately 61 loud impact sounds in rapid succession. Detectives concluded Biasini had been battered during the night.
At the crime scene, investigators found bloody footwear impressions. When they tested Geiggar's Vans shoes, the results came back presumptively positive for blood, though DNA analysis had not yet been completed at the time of his arrest. Geiggar denied the accusations. He acknowledged being near a 7-Eleven in the early morning hours but said he had not gone inside. He offered no explanation for the shoes or the blood.
He was taken into custody on a single felony count of open murder—a charge that alleges homicide without specifying degree. As of the time of reporting, it was unclear whether he had retained legal representation. The case remained pending, with DNA testing still underway. Geiggar has not been convicted. But the audio recording—those 61 thuds captured in the darkness—stands as a record of what happened to a woman who had nowhere else to sleep.
Notable Quotes
Video surveillance with audio captured the suspect approaching Marceline's location and, seconds later, a scream is heard followed by approximately 61 loud thuds.— Las Vegas Review-Journal, citing police records
The Hearth Conversation Another angle on the story
Why does the surveillance audio matter so much here? It's not like it shows the actual crime.
Because it's the closest thing to a witness. The camera couldn't see the attack, but the microphone heard it—heard the scream, heard every blow. That's 61 separate impacts. It's not ambiguous.
And the shoes—the blood on the shoes. Is that enough on its own?
Not yet. The blood tested positive, but DNA hasn't come back. That's why the case is still pending. Right now it's circumstantial—the shoes, the clothing match, the description, the audio. But DNA would be definitive.
What strikes you about his history? The fire, the punching, the anger management.
It's a pattern of escalation. You don't go from punching walls to being arrested for murder overnight. Something was building. And he was 17—still a kid, but old enough that the law treats him as an adult in a case like this.
He denies it. He says he wasn't at the 7-Eleven, or at least not inside it.
Right. But the store video doesn't back him up. And he hasn't explained the shoes, hasn't explained the blood. Denial without explanation doesn't hold much weight against physical evidence.
What about Biasini? Do we know anything about her beyond that she was homeless?
Only that she regularly slept in that area. She was 61. That's all the record tells us. She was a person with a place she went to sleep, and one night someone came and killed her there.