EVERETT — Their lives were just beginning on that chilly autumn day, when Jay Cook and Tanya Van Cuylenborg left their hometown for the last time.

Their killer evaded capture for three decades, until DNA revealed a suspect through his family tree, in what was a pioneering investigation.

A Snohomish County judge sentenced William Talbott II to life in prison without parole Wednesday, for murdering the young Canadian couple in 1987.

The pair was killed on an overnight trip from Greater Victoria, British Columbia, to south Seattle. Baffling gaps remain in the timelines of the killings. In a trial last month, no one could say exactly when or why Cook, 20, had been beaten with rocks, strangled to death and dumped under a bridge south of Monroe. Van Cuylenborg, 18, was shot in the head. Her body was left off a roadside, in rural Skagit County.

A long-awaited break came in 2018, when a private forensic lab plugged crime scene DNA — from semen on a pair of pants — into a public ancestry bank, GEDMatch. Second cousins on both sides of Talbott’s family had shared genetic profiles in the database. The suspect’s family lines intersected in the marriage of a Woodinville couple. Talbott was their only son.

Two more tests confirmed his DNA matched the semen. Talbott, 56, has maintained his innocence.

“The level of violence in this is something that I cannot comprehend,” he told the judge in court Wednesday. ” … I’ve gone all my life as a very passive person.”

Since last year, dozens of suspects have been arrested in cold cases across the United States, with the help of the new technique known as forensic genealogy. It has given police a groundbreaking new way to solve rape and murder cold cases. Privacy advocates, however, have serious misgivings about unchecked police handling of the technology.

In a landmark trial in Snohomish County, Talbott became the first defendant in such a case to go to trial by jury, and the first to be convicted.

On the day of his arrest, state law allowed two possible sentences for aggravated first-degree murder: life in prison, or death. The state Supreme Court effectively abolished the death penalty, as Talbott awaited trial.

That left only one option for Superior Court Judge Linda Krese on Wednesday. She sentenced the defendant to two consecutive life terms.

The sentence brings with it a kind of satisfaction, wrote Van Cuylenborg’s best friend from high school, May Robson, in a letter to the judge.

“But that’s all I have, satisfaction, nothing more, nothing less,” Robson said in the letter. “The sorrow will remain in my heart for the rest of my life. I miss my friend Tanya.”

Tanya Van Cuylenborg with her best friend May Robson. (Courtesy of John Van Cuylenborg)

King of Hearts

Van Cuylenborg had graduated from Oak Bay High School that June, a few kilometers east of the docks, boutiques and charm of downtown Victoria.

She was a competent sailor on family trips; a casual guitarist whose favorite band, U2, had just released their first No. 1 record; and a bit overmatched as a tennis player, when she battled her brother in the court in their backyard on Vancouver Island.

She cared for many pets: cats, fish, gerbils and — after constant appeals to her mother — a beloved Golden Retriever, Tessa. One day she dreamed of working with animals, perhaps as a veterinarian.

Tanya Van Cuylenborg with her Golden Retriever, Tessa.

But she wasn’t rushing to figure life out, to get a job and to get out of the house. She was saving for a trip to Holland, where she had family on her father’s side.

That summer she started to date Cook, who was 6-foot-4, broad-shouldered, left-handed. He’d worked on a fishing boat and in pizza restaurant, picked up bass guitar and loved boating with his family, too.

Cook invited his girlfriend to come to Seattle with him on Nov. 18, 1987. He needed to pick up a $750 money order for his father’s business.

They crossed on the Coho ferry from Victoria to Port Angeles, missed the exit to the Hood Canal Bridge, rerouted the bronze Ford van through Allyn en route to Bremerton, then boarded a ferry bound for Seattle.

Jay Cook, 20 (right), vanished Nov. 18, 1987, while on a road trip with his girlfriend, Tanya Van Cuylenborg, 18, in this bronze 1977 Ford Club van. Their bodies were found days later in Western Washington, about 65 miles apart. (Snohomish County Sheriff’s Office)

The boat docked before midnight. They planned to sleep in a parking lot outside Gensco, the appliance supply store in SoDo. They never arrived.

In post-trial interviews with The Daily Herald, jurors said they believe the pair had most likely been killed in the eight hours or so after they arrived in Seattle.

Six days later, a passerby found the young woman’s half-naked body in wet leaves off Parson Creek Road, a wooded drive near Alger. She’d been shot in the back of the head with a .380-caliber gun. Investigators swabbed semen from her body. Talbott’s defense argued the sexual contact had been consensual, not rape.

The next day, Van Cuylenborg’s ID, a box of .380-caliber ammo and gloves were found under the porch of a Bellingham bar. Around the corner sat the van, near a Greyhound station. The unused money order was still inside, along with a pair of semen-stained pants and a blood-streaked comforter.

It was Thanksgiving when a pheasant hunter’s dog uncovered Cook’s body under a blue blanket in the tall grass, along the approach to a bridge over the Snoqualmie River. Tissue and a pack of Camel Lights were shoved down his throat. He’d been strangled to death with twine tied onto dog collars.

At all three of the crime scenes, the killer left behind white zip ties. A Minolta camera, a ski jacket and a backpack were missing from the van.

Years of exhaustive investigation bore no fruit.

The Snohomish County Sheriff’s Office featured the couple in a deck of playing cards that they handed out to inmates, in hopes of conjuring new tips in 52 cold cases. Their names were on the King of Hearts.

Van Cuylenborg’s only sibling, John, a civil attorney in Canada, struggled to find words this month for how the senseless death deeply wounded his family.

Tanya Van Cuylenborg (right) with her father, Willem. (Courtesy of John Van Cuylenborg)

“My parents were never the same after Tanya’s murder,” John Van Cuylenborg wrote to the judge. “After a few years they were able to put on a facade most days that they were continuing on, but it did not take much to scratch through their thin veneer to expose their raw pain, shock at the cruelty of the world, and their lack of will to carry on.”

For years John Van Cuylenborg could not enjoy music or movies, he wrote, because happiness seemed like a betrayal of his sister’s memory.

Who is Bill Talbott?

Detective Jim Scharf handcuffed Talbott in May 2018, when the trucker from SeaTac returned from one of his routes. Meanwhile, investigators scattered across the region waited outside the homes of his family members, to knock on doors for interviews, before anyone else could influence them.

Seven women and five men on the jury heard little about Talbott’s background — except that he was a blue collar guy who grew up near Woodinville, liked to bowl and knew a thing or two about cameras.

Several of Talbott’s friends penned stunned letters in July 2018, asking a judge to reduce his bail. The Bill Talbott they knew was no killer.

“In the time I have known Bill, he has always been a loyal, caring, loving and unselfish person,” one friend wrote.

“I still do not believe this man could of done this terrible crime or even participated in any way,” another wrote.

“Bill is a very respectful man and has a heart of gold,” wrote a third family friend.

None of them knew Talbott in the ’80s. Court records show he’d been convicted of a misdemeanor assault in 1985. He was required to seek anger management counseling. He skipped court dates in 1986. After being booked into jail for an overdue $240 fine in 1988, he finally paid off his legal fees.

At the time of the killings, Talbott was 24.

Unflattering allegations about his past were outlined in court papers in June, in response to claims made by at least one former roommate, Michael Seat. At trial the defense questioned Seat’s credibility, and some of his memories conflicted in different retellings. The defense filed a motion to prevent certain claims from prejudicing the jury, without supporting evidence.

“Prohibit the state from eliciting that Mr. Seat saw a blue blanket in the Talbott house and in Talbott’s car in the early 1980s, similar to the one found on Jay Cook.”

“Prohibit testimony regarding Bill’s tumultuous relationships with his family members, including a fight where he’s alleged to have broken his sister’s arm, and that he grew up in a hoarder house.”

“Prohibit testimony that Bill only had one girlfriend. Including that he used cocaine with her and she left him when he ran out of money.”

“Prohibit testimony that Bill was like Jekyll and Hyde when he drank alcohol.”

“Prohibit testimony that Bill was a scammer, idiot, and good at bs-ing.”

“Prohibit testimony that Bill would hitchhike to Shari’s to meet people.”

“Prohibit speculation that Bill rode Greyhound buses.”

Seat also claimed he saw a bronze van outside Talbott’s house in fall 1987, on a misty day.

But the jury did not hear any of that.

Instead the former roommate’s testimony centered on a time Talbott took photos with him along a riverbank south of Monroe, in the general area where Cook’s body was found.

Other evidence was not shown to the jury.

A zip tie in the van tested positive for Talbott’s DNA, a revelation that didn’t become public until after the trial. Prosecutors did not tell jurors about the last-minute tests, to avoid a potential problem on appeal.

The defendant’s only words in the trial came when the jury delivered a verdict to a packed courtroom: guilty, on two counts of aggravated murder.

“No,” Talbott rasped. “I didn’t do it.”

He slumped over in an apparent state of shock. Jail guards pushed him out of courtroom in a wheelchair.

William Talbott II is helped to a wheelchair by Snohomish County Sheriff’s Deputies after being found guilty on June 28 in the 1987 killings of Tanya Van Cuylenborg and Jay Cook. Jurors deliberated for more than two days before reaching their verdict in the trial that hinged on 32-year-old DNA evidence and genealogical technology. (Kevin Clark/The Herald via AP, Pool file)

Sentencing

A month later, Talbott entered a courtroom standing, in a pale blue dress shirt. He took his seat and glanced behind him at four long benches full of people in the gallery.

National media followed the case, and journalists from Canada attended the hearing at 9 a.m. Wednesday.

Judge Krese dismissed last-ditch efforts by the defense for a new trial.

Defense attorney Jon Scott had argued deputy prosecutor Matt Baldock’s final arguments played too much on jurors’ emotions, rather than focusing on facts and evidence. Scott said the state’s theory rested on an inference that Talbott raped Van Cuylenborg, “and because he raped her, he did all these other things.” He argued the evidence didn’t back that up.

The judge rejected the argument. The defense, she said, was inviting the court to look at each piece of evidence “in a vacuum,” rather than in its broader context.

Scott also contended that jurors ignored the judge’s instructions in deliberations. Krese denied the jury’s request for a map of Western Washington, so a juror drew a map from memory, to visualize the couple’s route.

Krese did not find that improper Wednesday.

The judge proceeded to sentencing around 10:40 a.m. Cook’s sister Laura Baanstra spoke first.

“How can I stand up here and talk about being a victim,” she said, “when I have so much love coming in from all sides?”

Baanstra thanked God that her brother’s killer was off the street. Yet for the family of Jay Cook, the past year reopened wounds that had, as much as possible, healed long ago. In an interview, Cook’s father Gordon Cook said he did not look forward to the trial, because it meant reliving the horror.

“I don’t think I’ll ever understand Talbott,” he said. “I’m sure I don’t know anyone like that, and I just can’t imagine anyone like that.”

Jay Cook’s mother, Lee, believes her son pulled over to help a stranger on a cold night, because that’s the kind of person he was. She believes Talbott took advantage of his kindness.

“Jay would’ve picked anyone up, on a night like that,” Lee Cook said.

Jay Cook’s sister Kelly recounted how the defense said, in an opening statement, that Talbott led an unremarkable life.

“It seems to me the only remarkable thing he ever did … was to take,” she said. “And what he took was the lives of two very young people.”

No one spoke in court on Talbott’s behalf, except for his attorney and the defendant himself.

“I have not seen a hint of the cruelty necessary to commit these crimes,” Scott said.

Out of eight days of testimony, only a few minutes of the trial focused on how the suspect had been initially identified, through forensic genealogy. But that is the piece that garnered headlines across the country.

John Van Cuylenborg views the technology as not only a great way to solve cases, but a massive deterrent to stop murders before they happen.

“Society really owes an obligation to these kids, and to itself, to make use of this tool,” he said. “If there needs to be some rules around it, in terms of the extent of the crimes it can be for — sure, no problem. We’d be very much the worse off if we don’t take the opportunity to use this technology to make our society a safer place for everyone.”

Today, John lives a few minutes from his sister’s best friend, May Robson, who often visits his mother in a care home in Greater Victoria. Since kindergarten, their kids have attended the same schools.

“This,” Robson wrote, “has kept Tanya alive in my heart.”

Caleb Hutton: 425-339-3454; chutton@heraldnet.com. Twitter: @snocaleb.

The only known photo of Jay Cook and Tanya Van Cuylenborg together. (Cook family)

Tanya Van Cuylenborg and Jay Cook. (Family photos)