Investigators later described it bluntly.
The sisters saved each other's lives.
Mitchell was arrested.
This time, the punishment was much more severe.
He received more than eleven years in prison for the attacks.
According to the source, he ultimately spent around twenty-two years in custody.
For the public, Mitchell Gaff could now be understood as a violent offender who had been caught and imprisoned.
But the two murders remained unresolved.
Susan Vessie.
Judith Weaver.
At the time, investigators apparently could not prove Mitchell had killed either woman.
Maybe he had not even been considered the primary suspect.
Maybe the similarities between the cases and his known attacks were not enough.
Similarity is not evidence by itself.
Lots of crimes involve forced entry.
Lots involve victims being restrained.
Lots involve knives.
Police cannot convict someone because his known behavior feels similar to an unsolved crime.
They need proof.
For decades, that proof did not exist.
At least, not in a form investigators could use.
Then forensic science changed.
DNA changed everything.
By the twenty-first century, investigators could revisit evidence collected from old crime scenes and ask questions detectives in 1980 or 1984 could barely have imagined.
Was biological material preserved?
Could a DNA profile be developed?
Could it be compared against modern databases?
Could someone convicted decades later now have DNA in CODIS?
The physical evidence had not changed.
The science around it had.
That distinction has solved countless cold cases.
A murderer may think time destroys the investigation.
Sometimes time does the opposite.
Technology improves.
Databases grow.
A person who was once invisible becomes searchable.
And because Mitchell had later been convicted of serious crimes, his DNA had entered law-enforcement databases.
That created the possibility that old evidence might eventually point directly back to him.
Investigators reviewing Judy Weaver's murder examined material that had been used to bind her.
A ligature.
On that evidence, they were able to obtain a DNA profile.
The profile generated a hit in CODIS.
Mitchell Gaff.
After approximately forty years, Judy's murder suddenly had a name attached to the forensic evidence.
But detectives still needed to be careful.
A database hit is incredibly powerful.
It does not mean investigators simply knock on a suspect's door and immediately declare the case solved.
Old evidence can create complicated questions.
Contamination.
Handling.
Chain of custody.
How did the DNA get there?
Could there be some innocent explanation?
Was the database match accurate?
Detectives wanted a fresh sample directly from Mitchell so they could confirm what they were seeing.
There was an obvious problem.
Walking up to Mitchell and saying, "We are reopening a forty-year-old murder case and would like your DNA," might immediately alert him.
He could refuse.
He could request an attorney.
He could change his behavior.
Police needed a way to collect something Mitchell discarded voluntarily.
So they became creative.
On January 17, 2024, Mitchell was living in Olympia, Washington.
Someone knocked on his door.
Three people stood outside.
According to the source, they presented themselves as researchers working with chewing gum.
They told Mitchell they were testing a new product.
Would he be willing to sample it?
There would even be a gift voucher.
At first Mitchell was hesitant.
That could have ended the operation.
If he refused to chew the gum, investigators would need another opportunity.
But the undercover detectives continued talking.
They complimented him.
They complimented his home.
They made the interaction feel harmless.
Gradually, Mitchell relaxed.
He accepted the gum.
He chewed it.
Then he discarded it.
To Mitchell, it was trash.
To investigators, it was DNA.
That small piece of chewing gum represented forty years of forensic progress compressed into one object.
In 1984, Mitchell may never have imagined that biological material left at a crime scene could identify him decades later.
In 2024, he unknowingly handed investigators a modern comparison sample simply by chewing gum for people he thought were conducting consumer research.
The laboratory results came back.
The DNA matched.
Now detectives were no longer working only with an old database hit.
They had a fresh sample from Mitchell.
They had evidence from Judy's crime scene.
And they had a direct forensic connection.
The past had finally found him.
Still, investigators wanted more.
DNA can tell police that someone's biological material was present.
It cannot always explain everything that happened.
Detectives wanted Mitchell talking.
They wanted to know how he selected victims.
What he remembered.
Whether Judy was the only homicide.
Whether Susan's killing was connected.
Whether there were other victims who had never been identified.
And perhaps most importantly, they wanted to know whether Mitchell would incriminate himself without understanding exactly how much evidence police already had.
On May 1, 2024, officers arrived.
Mitchell was arrested.
A man now in his sixties was being confronted with crimes allegedly committed when he was a much younger man.
Inside the interrogation room, detectives faced a delicate problem.
Mitchell had spent years discussing some of his past offenses.
He had been through treatment.
He knew investigators could ask about his previous crimes.
But police did not want to immediately announce:
We have your DNA from a murder scene.
If Mitchell realized the stakes too quickly, he might stop talking.
He might request a lawyer.
The interview could end.
So detectives began elsewhere.
They allowed him to talk.
Mitchell spoke about alcohol.
About his old behavior.
About the night surrounding one of the offenses that had sent him to prison.
He described sitting inside a bar with other men and deliberately matching the pace at which they drank.
If one man took a drink, Mitchell took a drink.
If the other did, Mitchell followed.
Why?
Because he wanted to look normal.
He described his alcoholism as so severe that his natural urge was to drink much faster.
He believed copying other people's pace would hide what was happening inside him.
The statement was revealing.
Even decades later, Mitchell could describe consciously controlling his outward appearance.
Inside, he wanted more alcohol.
Outside, he wanted other people to see normal behavior.
That gap between appearance and internal impulse would echo through much of his interrogation.
Mitchell also described something he claimed happened before one of his major offenses.
He said he had spoken to a friend.
He had told the friend that he had committed assaults and was afraid he might do it again.
According to Mitchell, he did not want to continue.
He did not know what to do.
He claimed the friend did not want to hear it.
Instead, the friend wanted to go drinking.
Years later, Mitchell appeared to express resentment about that response.
He suggested the drinking had fueled what came next.
Investigators recognized something disturbing in the way he framed the memory.
Responsibility was beginning to move outward.
His friend did not listen.
His friend wanted to drink.
Alcohol made things worse.
There were always outside forces available to place around Mitchell's decisions.
Detectives did not challenge him aggressively.
There was no benefit in turning the conversation into a moral argument.
Their objective was not to convince Mitchell he was a bad person.
Their objective was to get him talking.
If allowing him to explain himself kept the conversation moving, they would listen.
That is one of the most important elements of successful interrogation.