The Green River Killer: 19 Years, 49 Women and a Piece of Gauze
In the summer of 1982, young women began to disappear from one road in the United States.
The road was a stretch of highway south of Seattle, a city in the far northwest of the country, about 180 km south of the Canadian border. It ran past the city's international airport.
Along it stood cheap motels, bars, fast-food places and bus stops. Trucks and taxis passed day and night.
Many of the women who walked along that road were very young. Some had run away from home. Some were working as prostitutes. Some were simply waiting for a bus. Many were 15, 16 or 17 years old.
When one of them stopped coming back, often nobody reported it for days. Sometimes nobody reported it at all. Families had lost touch. Friends assumed she had moved to another city.
That silence is the first thing to understand about this case. The man who killed them chose women he believed nobody would look for.
The river
On 15 July 1982, children playing near a town south of Seattle found a body in the Green River, a slow river that runs through farmland and suburbs toward the sea.
It was a girl of 16. She had been strangled.
In the middle of August, more bodies appeared in the same river. On 15 August, 3 more women were found in and beside the water along the same stretch.
That made 5 in one month.
The next day, 16 August 1982, the county sheriff's office set up a special team to find the killer. It was called the Green River Task Force. A local newspaper called it the biggest police task force in the region since a notorious serial killer had murdered young women there in the 1970s.
One of the detectives on the case from the first weeks was a 31-year-old homicide investigator named Dave Reichert. He would stay with it, in one role or another, for the next 21 years.
This is what the case is about, in one sentence: a man murdered dozens of young women near Seattle, met the police again and again and walked free each time, and was finally caught by a sample of his own saliva that detectives had kept in storage for 14 years.
The killer became known as the Green River Killer.
Then the river went quiet
After August 1982, the killer stopped using the river.
The women kept disappearing. But now their bodies were left in wooded areas: near the airport, beside remote roads, sometimes several in one place.
Some were found within weeks. Some were found years later, as bones. Some have never been found.
Most of the killings happened between the summer of 1982 and the spring of 1984. In those 2 years, the task force's list of likely victims grew every few months.
The detectives faced problems that made this case unlike an ordinary murder.
Most bodies were found long after death, so there was rarely a clear time or place. Many had lain outdoors for months, and the heavy rain of that region had washed away the traces.
For many victims, nobody knew who had seen them last, or even what day they had vanished.
And the people who might have seen something, on the highway and in the motels, often did not trust the police and did not want to talk to them.
The wrong man
The first strong suspect was a taxi driver.
He had driven women from the highway around town, including some of the victims. In 1982 he called the police himself to offer tips about the case.
The detectives found his interest suspicious. He moved to the top of their list.
For months he was followed and watched. A former officer of the police intelligence unit later recalled "countless hours" of surveillance. Newspapers printed his name.
He was never charged with anything. In late 1985, the FBI told the task force that he was almost certainly not their man.
He was one of about a dozen men under surveillance in those years. All of them must be regarded as innocent: none was charged, and the evidence later pointed elsewhere. When the real killer was arrested in 2001, the former taxi driver told a newspaper that he felt vindicated.
Meanwhile, the man who actually did it had already met the police.
The man in the truck
On 30 April 1983, an 18-year-old woman disappeared from the highway.
Her boyfriend did not wait for the police. He drove around the area looking for her.
A few days later he saw a pickup truck parked outside a house. It looked like the truck she had climbed into on the night she vanished.
The house belonged to a man named Gary Ridgway. He was 34. For years he had worked at a truck factory near Seattle, painting the new trucks before they left the plant.
A detective went to speak to him. He said he did not know the woman. There was no body and no evidence, and he was not charged.
Her remains would be found only 20 years later, in 2003, when he himself led investigators to the place.
In 1984, the same man contacted the task force on his own initiative. He said he had information that might help the investigation.
On 2 April 1984 he took a polygraph test, a lie detector. He passed.
For years, that result helped keep him lower on the list of suspects.
A polygraph does not detect lies. It measures signs of stress: pulse, breathing and sweat. Some people show very little stress when they lie. For this reason, courts in the United States generally do not accept its results as evidence.
But in a task force drowning in names, a passed test was a reason to look elsewhere. And so they did.
Also in 1984, help came from a strange direction.
The notorious serial killer who had murdered young women in the same region in the 1970s was now on death row in Florida. He wrote to the task force and offered to share his thinking about the unknown killer.
In late 1984, 2 detectives flew to Florida to interview him. One of them was Reichert.
The prisoner told them that the killer was probably going back to the places where he left the bodies. He suggested watching any fresh site where a body was found.
Years later, the killer's own confession showed that this was true. He did return to the bodies.
At the same time, an FBI profiler wrote a psychological profile of the unknown man: his likely age, habits and way of life.
None of this produced a name. It only described the kind of man they were looking for.
1987: the gauze
By 1987, the detectives had more about the man in the truck.
He was reportedly the last person seen with 2 of the missing women. His credit-card receipts showed that he bought large amounts of gasoline during the periods when women disappeared. That meant a lot of driving.
On 8 April 1987, detectives searched his home and his vehicles. They found nothing they could use in court.
But a court order allowed them to take samples from his body. They took hair. And they gave him a small piece of gauze to chew on, to collect his saliva.
In 1987, that piece of gauze was almost useless.
DNA testing was very new. The tests of that time needed a fairly large amount of material. The samples taken from the victims' bodies in 1982 were tiny.
A test could use up the evidence completely and still give no answer. The detectives would get one try, and they knew it. As the sheriff later put it, "We felt we had pretty much one shot at this."
So they did the only thing they could. They stored the samples carefully, and waited.
The years passed.
The task force had now spent more than 15 million dollars. It had bought a computer worth 200,000 dollars to sort the tips, which numbered in the hundreds, if not thousands. Newspapers criticised it for its cost and its lack of results.
By the end of the 1980s, most of the detectives had been moved to other cases.
In July 1991, the task force was reduced to a single investigator.
For the next 10 years, the largest murder investigation in the history of the region was one detective and boxes of files and evidence. He kept them in order. He did not let anything be thrown away.
The sheriff reopens the case
In 1997, Reichert, the young detective of 1982, was elected sheriff of the county. He now ran the whole department.
By then DNA science had changed. A newer method could build a profile from a very small amount of material, and compare it with others.
In 2001, the last remaining detective decided it was time to use the one shot.
In March 2001 he sent the old evidence to the state crime laboratory: semen samples taken from victims in 1982, together with saliva and blood from 3 men who had been suspects. One of the saliva samples was the gauze from 1987.
A forensic scientist at the laboratory later called it "a last-ditch effort."
Some months later, the result came back.
The DNA in semen taken from 3 of the women found in the river in August 1982 matched the saliva on the gauze.
The man had been in the police files since 1983.
The detectives did not move at once. They followed him and prepared the case.
On 30 November 2001, at about 3 in the afternoon, Gary Ridgway was arrested as he left work at the truck factory. He had worked there for more than 30 years. He was now 52.
He was charged with the murders of 4 of the early victims: the 3 matched by DNA, and a fourth woman linked to him by other evidence.
Two weeks later the sheriff assembled 11 investigators to work on the case full time. For the first time in 10 years, the task force was a real team again.
The paint
The DNA covered only 3 women. For most of the others, the river and the rain had washed away almost everything.
The investigators went back to a clue that had never been examined.
On the clothing around the neck of the very first victim, the 16-year-old found in July 1982, there were traces of spray paint. For 20 years nobody had analysed them.
Scientists now looked at the paint under a powerful microscope. They found tiny spheres of paint, the kind of dust that floats in the air where paint is sprayed.
The spheres matched a specific brand and composition of paint used at the truck factory during the years when these women were killed.
In March 2003, the prosecutors added 3 more murders to the charges, based on this paint dust. The first victim was one of them.
If the paint had been tested in 1982, the investigators could have linked the murders to a truck painter far sooner.
The deal
The prosecutors now had a case for 7 murders.
But dozens of other families still had no answers. Some did not even have a body to bury.
So the prosecutors made a deal that is debated to this day. He would not face the death penalty. In exchange, he had to confess to every murder he had committed, answer every question, and lead investigators to the remains.
For 5 months he was questioned by police and prosecutors. He took detectives into the woods and showed them where he had left bodies.
In August and September 2003, the remains of several women were recovered. Among them was the 18-year-old who had vanished in April 1983, the woman whose boyfriend had found the truck.
On 5 November 2003, Gary Ridgway pleaded guilty to 48 murders. 42 of them had already been on the task force's list of likely victims.
The county's chief prosecutor explained why he had agreed. Without the deal, he said, they could have gone to trial on 7 counts, "but that is all we could have ever hoped to solve."
On 18 December 2003, a judge sentenced him to 48 life sentences, one after the other, with no possibility of release.
In 2011, the remains of another young woman were identified, and he pleaded guilty to a 49th murder. The convictions cover killings from 1982 to 1998.
Here is where what we know ends
In his recorded interviews, he gave different numbers. First he claimed 65 murders. Later he said 71.
**49 murders are proven in court. Every number above 49 comes only from his own mouth, and nobody has been able to confirm it.**
Some women on the old list of missing persons have never been found.
The work of putting names to remains has not stopped. In 2005, a skull was found in the woods east of Seattle and identified as one of the missing women. In December 2023, DNA testing identified one more of the victims.
So the story of the investigation is complete: we know who did it, how he was found, and why it took so long. What is not complete is the list of the dead.
Conclusions and Open Questions
This case is taught today as a lesson in how a killer can stand in plain sight for 19 years. The people who studied it point to several failures. Each explanation has its strength and its limit.
**The science was not ready.** The evidence: the saliva was collected in 1987, and the test that could read it arrived only in the late 1990s. The investigators themselves said they had one chance and could not waste it. The problem: this explains the delay in DNA, but not the paint. That clue was on the first victim's clothes from the first day, and it needed only a microscope.
**The lie detector misled them.** The evidence: after he passed it in 1984, he was not treated as a leading suspect for years. The problem: we cannot know how much weight the detectives really gave it. They still searched his home in 1987, so they had not forgotten him.
**Too much attention went to the wrong man.** The evidence: for months, people and money went into watching a taxi driver who was later cleared and was never charged. The problem: in 1982 he was a reasonable person to check. A task force has to check the people who insert themselves into a case. The error was not in checking him, but in how long it took to let him go.
**The victims were not treated as a priority.** The evidence: many of the women were young, poor, and working on the street. Their disappearances were often reported late, or not at all, and the killer said he chose them for exactly that reason. The problem: the task force was the largest the region had ever seen. It is hard to say the police did not care. It is easier to say that the world around the victims did not.
**Was the deal the right decision?** In favour: dozens of families received answers and remains they would never have had. Without the deal, 7 cases could have been tried. Against: critics said that a man who killed so many should not escape the death penalty, and that a confession made in exchange for a deal cannot be fully trusted.
And the questions that remain open:
How many women did he really kill? The court says 49. He said 71. Nobody can prove either number wrong.
Are there women from those years whose names were never on any list, because nobody ever reported them missing?
And how many of the cases on the old list will ever be closed, now that the man who knows the answers has no more reason to talk?