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“The Salem Strangler”: 20/20 Reports on Claire Gravel Homicide September 25 2026

by · September 24, 2026

ABC’s 20/20 opens its new season with “The Salem Strangler,” a two-hour investigation into the murder of 20-year-old Salem State College student Claire Gravel and the nearly four-decade search for the man who killed her.

The episode traces Gravel’s final night in Salem, the discovery of her body beside Route 128 in Beverly, the investigation that failed to identify her killer, and the forensic evidence preserved long enough for advances in DNA science to change the case. It also examines the 2007 strangulation attack on Rosemarie Diskin, a woman who survived an encounter with John Carey and helped create the chain of evidence that would bring investigators back to Gravel’s murder.

Carey was indicted for Gravel’s murder in 2022. In March 2026, an Essex County Superior Court jury found him guilty of first-degree murder. The conviction carried a mandatory sentence of life in prison without the possibility of parole.

“The Salem Strangler” tells a story that spans 40 years, from an unsolved killing in 1986 to a courtroom in 2026, with one surviving victim, preserved evidence and a DNA database connecting crimes committed more than two decades apart.

Who Was Claire Gravel?

Claire Gravel was 20 years old and from North Andover, Massachusetts. In 1986, she was a student at Salem State College, now Salem State University, and had studied computer science. She had also worked for the college’s Department of External Affairs and, at the time of her death, worked at National Braille Press.

People who knew Gravel described a young woman with plans beyond college. At Carey’s sentencing, her family spoke about her interest in law, her hope of having a family and her desire to travel. Her brother James remembered her as fun, feisty and friendly, while another family description called her a “ray of sunshine.”

Gravel had taken a leave of absence during part of the previous academic year but intended to return to Salem State for her junior year. Her life before the murder had been that of a college student balancing education, work, friends and plans for adulthood.

Nothing in the public record suggests Gravel knew John Carey. Prosecutors said the two were strangers. That fact became significant at trial because it left prosecutors without a conventional relationship-based motive and placed greater weight on the physical evidence linking Carey to her body and clothing.

Claire Gravel’s Final Night

On Saturday, June 28, 1986, extending into the early hours of June 29, Gravel spent the night with friends in Salem.

The group went to Major Magleashe’s Pub on Washington Street. The establishment was part of a busy downtown area where college students and local residents gathered. Gravel remained with friends until the early morning.

Her friends drove her back toward her apartment on Loring Avenue. Authorities placed the last confirmed sighting of Gravel between about 1:30 and 1:45 a.m., when she was dropped off near her residence.

What happened between that moment and her death became the central mystery of the case.

Investigators had no witness who could provide a complete account of who Gravel encountered after she left her friends, how she came into contact with Carey or how she was transported from Salem to Beverly.

Claire Gravel Is Found Dead Beside Route 128

The search for Gravel ended the next day.

Three workers discovered her body in a wooded area beside the northbound lanes of Route 128 in Beverly. The location was several miles from the apartment where her friends had left her.

The medical examiner determined that Gravel had been strangled.

Evidence presented decades after the crime established that her own black tank top had been used as the ligature. Prosecutors said the garment had been pulled and twisted around her neck until she died.

Contemporary reports also indicated that Gravel had suffered other injuries. Friends told the Boston Globe after the killing that police had informed them she had been beaten.

The condition of the crime scene left investigators facing two separate questions: who had killed Gravel and where the killing had taken place. Her body had been found in woods beside a highway, but detectives had to determine whether that location was also where she was attacked or where her body had been left after the murder.

The Original Murder Investigation

Police began interviewing people who had seen Gravel on her final night.

Over the years, investigators spoke with dozens of witnesses and persons of interest. Tips were checked, leads were pursued and evidence recovered from Gravel and the scene was retained.

The case did not produce an arrest.

Detectives lacked the type of forensic technology that would become standard in homicide investigations decades later. DNA profiling was in its infancy in 1986, and the national database that would become crucial to the Gravel case did not exist in the form investigators would use years afterward.

The evidence collected from Gravel’s clothing therefore had value that could not be realized at the time.

Investigators preserved it.

That decision would become one of the most important factors in solving the murder.

A Case That Refused to Disappear

For Gravel’s family, the absence of an arrest meant years without an explanation for who had killed Claire or why.

Her father, Robert Gravel, continued carrying a photograph of his daughter in his wallet. When prosecutors announced an indictment in 2022, then-Essex County District Attorney Jonathan Blodgett referred to the photograph and the 36 years the family had spent waiting for answers.

The passage of time created challenges.

Witness memories faded. People connected to the original investigation aged or died. Physical locations changed. Investigators who had worked the first case retired.

The preserved evidence did not have those same limitations.

Material recovered from Gravel’s clothing remained capable of examination as forensic science improved.

The case remained open, even when an arrest appeared remote.

Journalist James Maroney Keeps Returning to the Murder

One of the people who refused to allow Gravel’s case to disappear was journalist James Maroney.

Maroney was a young North Shore reporter when Gravel was killed in 1986. The murder became one of the stories he followed near the beginning of his career.

He continued examining the case long after the original headlines disappeared.

Over the following decades, Maroney returned to locations associated with Gravel’s death, contacted news organizations and sought renewed attention for the case. His work became part of the public effort to keep the unsolved murder in view.

His involvement is featured in 20/20’s “The Salem Strangler.”

For Gravel’s family, media attention served a practical purpose. An unsolved murder depended on someone remembering a detail, investigators returning to old evidence or new technology creating a path that did not exist before.

John Carey and a Second Strangulation Case

More than two decades after Gravel was killed, John Carey came to the attention of police because of another strangulation attack.

In 2007, Rosemarie Diskin was attacked inside her home in Hamilton, Massachusetts.

Diskin knew Carey through the neighborhood. She testified in 2026 that he had lived on the next street and that she knew his former wife. She did not describe Carey as a friend.

Carey entered Diskin’s home and strangled her.

Unlike Gravel, Diskin survived.

Her survival meant police had a living victim who could identify the man who attacked her and describe what he had done.

Carey was prosecuted and convicted of attempted murder in 2008.

Rosemarie Diskin Survives the Attack

Diskin’s survival became one of the most important developments in a homicide investigation she had no known connection to at the time.

She testified about the attack during Carey’s 2026 murder trial, telling jurors that Carey had come into her Hamilton home and strangled her.

Her testimony allowed prosecutors to show the jury what had happened in the crime that placed Carey into the criminal justice system.

That conviction came with another consequence.

Carey was required to provide a DNA sample.

The sample entered law-enforcement databases used to compare the genetic profiles of convicted offenders against DNA recovered from unsolved crimes.

The biological evidence preserved from Claire Gravel’s 1986 murder could now be examined against a person whose DNA profile did not exist in such a database when she was killed.

The DNA Sample That Changed the Case

Carey’s DNA became the link investigators had lacked.

Prosecutors said testing identified Carey’s DNA on the black tank top used to strangle Gravel.

The significance was direct.

This was not DNA recovered from an incidental item at a public location.

It was found on the garment prosecutors said had been used as the murder weapon.

During closing arguments at Carey’s trial, Deputy First Assistant District Attorney Kim Faitella described the DNA as the genetic evidence Carey had left on the item used to kill Gravel.

For investigators who had spent decades examining the case, the comparison produced a suspect who could be connected to the central piece of evidence in the murder.

Why the Case Did Not Result in an Immediate Murder Charge

Carey’s DNA sample came from his 2008 conviction, but he was not indicted for Gravel’s murder until 2022.

Cold-case investigations can take years after an initial forensic lead.

Detectives must confirm laboratory results, determine how DNA might have reached the evidence, reexamine original reports, locate witnesses and establish whether the forensic result can support a criminal prosecution when combined with the rest of the case.

The Essex County District Attorney’s Office said a new lead developed in 2012 and that prosecutors, Massachusetts State Police detectives, Salem police and Beverly police continued working the case.

The investigation brought together evidence gathered in 1986 with methods unavailable to the original detectives.

By the time prosecutors sought an indictment, Carey was serving a sentence for the attack on Diskin.

John Carey Is Indicted for Claire Gravel’s Murder

On August 24, 2022, an Essex County grand jury indicted Carey for Gravel’s murder.

He was 63 years old.

Gravel had been 20 when she was killed.

The indictment came 36 years after her body was discovered.

At the time, Carey was incarcerated because of his attempted-murder conviction.

The district attorney’s office identified evidence recovered from Gravel’s clothing as instrumental in solving the case.

Carey was arraigned on the murder charge in October 2022.

Prosecutors disclosed that the DNA sample he had been required to provide after the attempted-murder conviction had been linked to DNA obtained from Gravel’s tank top.

The family that had spent decades waiting now faced another period of waiting: the case had to move through the court system.

The Murder Case Reaches Trial in 2026

Carey’s trial began in Essex County Superior Court close to 40 years after Gravel’s murder.

The prosecution faced the challenge common to cold cases.

There was no eyewitness to the killing.

The victim could not explain how she met Carey.

There was no known relationship between them.

Many of the events had occurred decades before jurors entered the courtroom.

The strength of the prosecution case rested on forensic evidence and the circumstances surrounding the tank top.

Prosecutors told the jury that Carey’s DNA was found on the garment used to strangle Gravel.

They argued that the location and nature of that evidence linked him to the killing rather than to an innocent encounter.

The Prosecution’s Theory of the Murder

Prosecutors said Carey strangled Gravel with her own black tank top.

During closing arguments, Faitella told jurors that Carey grabbed the shirt and twisted it around Gravel’s neck. She argued that the killing was associated with his sexual interest in strangulation.

The prosecution also introduced evidence concerning Carey’s later attack on Diskin.

Diskin took the witness stand and described Carey strangling her inside her Hamilton home.

The state argued that the evidence from Gravel’s clothing identified Carey as the man responsible for the 1986 murder.

The DNA gave prosecutors what the original investigators had never possessed: physical evidence identifying one suspect through a scientific profile.

Carey’s Defence Challenges the Investigation

Carey denied murdering Gravel.

His defence argued that police had focused on the wrong man and questioned the quality of the original investigation.

His attorney told jurors that Beverly police had failed to investigate some suspects with enough depth.

The defence faced the task of explaining the DNA on the tank top.

With no known relationship between Carey and Gravel, prosecutors argued there was no innocent reason for his biological material to be present on an item used to strangle her.

The jury had to assess whether the forensic evidence established guilt beyond a reasonable doubt despite the time that had passed and the gaps that remained in the exact sequence of events.

The case did not require jurors to reconstruct every moment between Gravel’s arrival near her apartment and the discovery of her body.

It required them to decide whether the evidence proved Carey was her killer.

Rosemarie Diskin Takes the Stand

Diskin’s appearance at the murder trial connected the two cases in front of the jury.

She described the 2007 attack and identified Carey as the man who strangled her.

Her case mattered for two reasons.

The first was evidentiary: prosecutors were able to present evidence concerning a later strangulation attack.

The second was forensic: Carey’s conviction for attacking Diskin led to the DNA sample that became the path back to Gravel.

Without Diskin’s survival and the prosecution that followed, Carey’s DNA might not have entered the database at the point it did.

A woman who survived being strangled had become part of the chain that identified the man accused of strangling another woman 21 years before.

The Jury Convicts John Carey

On March 3, 2026, the jury returned its verdict.

John Carey was found guilty of first-degree murder.

The verdict came close to 40 years after Claire Gravel’s death.

Essex County District Attorney Paul Tucker credited generations of investigators and prosecutors who had preserved and pursued the case.

He said the original work in 1986 had provided a foundation that advances in science and technology could use decades after the murder.

For the Gravel family, the verdict provided an answer to the question that had followed them since 1986.

A jury had identified the man responsible for Claire’s death.

First-Degree Murder Carries Life Without Parole

Carey returned to Essex County Superior Court for sentencing on April 9, 2026.

Under Massachusetts law, his first-degree murder conviction carried a mandatory sentence of life imprisonment without the possibility of parole because Carey was an adult when Gravel was killed.

The judge imposed that sentence.

Carey did not address the court before he was sentenced.

He was 66 years old.

He had entered the murder case as a prisoner serving a sentence for the attempted murder of Diskin and left the sentencing hearing under a life-without-parole judgment for Gravel’s murder.

His defence said an appeal would be filed. First-degree murder convictions in Massachusetts also receive review by the state’s highest court.

Claire Gravel’s Family Finally Faces Her Killer

Gravel’s 90-year-old father and five siblings attended Carey’s sentencing.

For them, the hearing represented the end of a wait measured in decades.

Claire’s sister Denise Foley told the court she had waited 39 years, nine months and nine days for that moment. She described nightmares in which she imagined Claire calling for help while her family was unable to reach her.

Other siblings focused on the life Claire had been denied.

Her brother Bob described a young woman with hopes of studying law, having children and experiencing the world. James Gravel described the importance of justice to the family.

The family also remembered their mother, who had died in 2015 without seeing anyone convicted for Claire’s murder.

The sentence could not return Claire to them.

It did end the question of whether the person convicted of killing her could one day be released on parole.

What Happened to Rosemarie Diskin?

Diskin survived Carey’s attack and became a crucial witness in the Gravel prosecution.

Her 2007 case had already resulted in Carey’s attempted-murder conviction.

By the time she testified in 2026, the crime against her had also assumed a second significance: it had supplied the DNA sample that enabled investigators to connect Carey to Gravel’s clothing.

Diskin’s role demonstrates one of the unusual features of the case.

The breakthrough did not arise from a confession or from a witness coming forward about the 1986 murder.

It came through another woman surviving a strangulation attack decades after Gravel was killed.

The later prosecution created forensic evidence that could be compared against an unsolved homicide from another era.

Why the DNA Evidence Was So Important

DNA evidence is most persuasive when investigators can establish why its location matters.

In the Gravel case, prosecutors said Carey’s DNA was found on the black tank top used to strangle her.

That location allowed the state to argue that Carey had direct contact with the murder weapon.

The fact that authorities said Carey and Gravel did not know each other strengthened the prosecution argument against an innocent explanation for the DNA.

The evidence also showed why retaining material from old cases matters.

Investigators in 1986 could not use modern DNA databases to identify the biological material on Gravel’s clothing.

The evidence outlived the limitations of the technology available when it was collected.

Decades after Gravel’s death, the same evidence could be tested against a profile created because Carey committed another violent crime.

The Case Shows How Cold Investigations Can Span Generations

The Gravel investigation passed through several eras of law enforcement.

Detectives in 1986 collected the evidence.

Investigators in later years maintained the case.

A new lead developed in 2012.

Prosecutors secured an indictment in 2022.

A jury reached a verdict in 2026.

Some of the people involved at the end were not involved at the beginning.

That continuity is one of the central themes of the case.

Cold cases often depend on preservation and institutional memory as much as a single breakthrough.

If Gravel’s clothing had not been retained, there would have been no garment to test.

If Carey’s DNA had not been entered into the criminal database after Diskin’s case, there might have been no known profile for comparison.

Why the Case Took Almost 40 Years to Reach a Jury

The length of the case can create the impression that police stopped investigating and then found an answer without warning.

The record shows a more complex process.

The Essex County District Attorney’s Office said law enforcement followed leads and interviewed numerous people over the years. A new investigative lead emerged in 2012, a decade before the indictment.

The murder then required a prosecutable case.

A laboratory match was a major development, but prosecutors still had to establish the history of the evidence, account for how it was collected and stored, review the old investigation and prepare witnesses for a trial concerning events from 1986.

Carey’s indictment in 2022 began another lengthy legal process.

The trial did not reach a verdict until March 2026.

The Meaning of the “Salem Strangler” Title

20/20 uses “The Salem Strangler” as the title for its season premiere.

The title reflects the method used to kill Gravel and the later attack on Diskin.

Other coverage has referred to Carey as the “Hamilton Strangler,” based on the location of the 2007 attack. That label appeared in reporting after his murder conviction but is not a separate criminal charge or official legal designation.

The documented facts are more important than the nickname.

Carey was convicted of attempting to murder Diskin after strangling her.

He was then convicted of first-degree murder after prosecutors established that his DNA was present on the garment used to strangle Gravel.

Those two cases, separated by 21 years, became linked through forensic evidence.

A Murder Without a Known Relationship

One of the remaining questions is how Carey encountered Gravel.

Authorities have said the two did not know one another.

That leaves parts of Gravel’s final hours without a complete public reconstruction.

Her friends dropped her near her Salem apartment.

Her body was found in Beverly.

The trial established who killed her, but a guilty verdict does not require prosecutors to answer every question about the hours surrounding a homicide.

Carey’s motive was addressed through the prosecution theory that he had a sexual interest in strangulation.

The jury accepted the evidence supporting first-degree murder.

The precise circumstances under which Gravel and Carey crossed paths remain among the details that almost four decades of investigation could not restore.

The Outcome of the Claire Gravel Case

The legal result is now settled at the trial-court level.

John Carey was convicted of first-degree murder on March 3, 2026.

He was sentenced on April 9 to life in prison without the possibility of parole.

He remains subject to the appellate process.

His attorney announced plans to appeal, and Massachusetts first-degree murder convictions receive review by the Supreme Judicial Court.

Unless the conviction is overturned through that process, Carey will remain in prison for the rest of his life.

The 2007 attack on Diskin had already resulted in a separate attempted-murder conviction and prison sentence.

The two cases now stand together in Carey’s criminal record.

What 20/20’s “The Salem Strangler” Examines

“The Salem Strangler” reconstructs the case from Gravel’s final night through Carey’s 2026 conviction.

The episode examines the original investigation and the years in which Gravel’s family had no answer to who killed her.

It also follows the second strangulation case involving Diskin and explains how evidence generated by Carey’s conviction became connected to material saved from the 1986 murder.

The programme gives attention to the role of DNA science but also to the people who prevented the case from disappearing.

That includes generations of investigators and prosecutors, Gravel’s family and journalist James Maroney, who continued returning to the story across almost four decades.

The eventual conviction depended on all of those strands converging.

Forty Years From Murder to Judgment

Claire Gravel left a Salem pub with friends in June 1986.

She was 20 years old.

Within hours she was dead, and by the next afternoon her body had been found in woods beside Route 128.

For decades, her family knew how she died but not who had killed her.

Then another woman survived.

Rosemarie Diskin lived through Carey’s strangulation attack in 2007. Her case led to his conviction, his DNA entered the criminal justice system, and investigators gained the forensic comparison that had not existed when Gravel was murdered.

The tank top preserved from the crime became the bridge between 1986 and the modern investigation.

In March 2026, jurors found Carey guilty.

In April, the court sentenced him to life without parole.

The outcome came too late for Claire Gravel to live the future her family said she had imagined, and too late for her mother to see the man responsible held accountable.

It did provide a legal conclusion to a murder case that had remained open for almost 40 years.

20/20: “The Salem Strangler” airs Friday at 9/8c on ABC and streams on Disney+ and Hulu.

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Ryan Gill

Ryan is a passionate follower of true crime television programs, reporting on and providing in-depth investigations on mysteries in the criminal world.

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