Mary Lou Arruda: The Abduction, Kater Trials, and Raynham’s Memory

Mary Lou Arruda was a 15-year-old girl from Raynham, Massachusetts, who was abducted on September 8, 1978, while riding her bicycle and later found tied to a tree in Freetown State Forest, where she had died of strangulation. Her killer, James M. Kater, a convicted sex offender who had attacked a young girl in nearly identical fashion a decade earlier, was ultimately convicted of first-degree murder after four trials spanning almost twenty years. The case reshaped Massachusetts law on hypnotically refreshed witness testimony and prompted changes to how the state tracks sex offenders and responds to reports of missing children.

The Abduction on September 8, 1978

Mary Lou was riding an orange 10-speed bicycle near Dean Street in Raynham on the afternoon of September 8, 1978, when Kater forced her into his lime-green 1976 Opel.¹ Minutes later, he was seen driving past the Arruda family home on Church Street with her in the car. A local boy found her abandoned bicycle in the woods about a half-mile from where she was taken.²

Nine weeks passed before her body was found. On November 11, 1978, searchers located her in Freetown State Forest, fully clothed and tied to a tree.³ A pathologist concluded she had been alive and standing when she was bound to the tree; once she lost consciousness, the weight of her head against the ligature around her neck caused her to suffocate. Experts believed she most likely died the same day she was taken.

Who Was James Kater

Kater already had a history that closely paralleled what he did to Mary Lou. In 1968, he abducted 13-year-old Jacalyn Bussiere as she walked her bicycle in North Andover, drove her to a wooded area, struck her on the head with an iron bar, and tied her to a tree using strips torn from a bedspread. He strangled her until she lost consciousness and left her for dead. Bussiere survived by untying herself and running for help.³

On February 6, 1969, Kater pleaded guilty to assault with intent to rape, assault and battery by means of a dangerous weapon, and kidnapping in the Bussiere case. He spent most of the next decade in prison and was released in early 1976.³ According to reporting, his other history included running a woman off the road in an attempted abduction and attacking a 63-year-old woman in a cemetery.¹ He was in clinical therapy in the Bridgewater area when he murdered Mary Lou, roughly two and a half years after his release.

The Evidence Tying Kater to the Murder

Kater was indicted on November 28, 1978, for kidnapping and first-degree murder.³ The case against him combined physical evidence, eyewitness accounts, and the earlier attack.

Tire tracks near Mary Lou’s bicycle matched an abnormal tread wear pattern on Kater’s Opel caused by disintegrated wheel bearings.
A Benson & Hedges cigarette was found near the bicycle, and the same brand was inside Kater’s car, along with dark-rimmed glasses and local newspaper articles about the disappearance.
Multiple witnesses identified Kater’s bright green Opel with a black racing stripe near the Arruda home and near Freetown State Forest the day Mary Lou vanished.
Investigators determined the alibi Kater had given for the time of the disappearance was false.
The court allowed prosecutors to introduce the 1968 Bussiere abduction as a “signature crime,” noting the shared method of tying victims to trees in a position designed to strangle them when their heads fell forward.

At the fourth trial, Kater testified and offered an alibi that differed from one his lawyers had filed in a brief during his first trial. Prosecutors used the inconsistency to argue he was lying to win acquittal.⁴ His defense argued he was the target of a police conspiracy.

Four Trials and the Hypnosis Rulings

Kater was tried four times over nearly two decades, one of the longest-running criminal prosecutions in Massachusetts history.⁵ What kept sending the case back was the prosecution’s use of witnesses who had been hypnotized during the investigation.

A jury convicted Kater of kidnapping and first-degree murder in 1979. In 1983, the Massachusetts Supreme Judicial Court reversed that conviction in Kater I, holding that testimony about facts recalled only after hypnosis is generally inadmissible because hypnosis lacks “general acceptability by experts in the field as a reliable method of enhancing the memory of a witness.”⁶ Witnesses could still testify to what they remembered before being hypnotized, but the prosecution had to prove which memories were genuinely prehypnotic.

A second trial in 1986 produced another conviction. In 1991, the Supreme Judicial Court reversed again in Kater III, finding that hypnotically influenced testimony had once more been improperly admitted. The court tightened its rule, limiting previously hypnotized witnesses to facts documented in the record before their hypnosis sessions.³

A third trial began in October 1992 and ended with a hung jury on December 24, 1992.⁷ The fourth trial opened on October 31, 1996, in Middlesex Superior Court in Cambridge. On December 23, 1996, the jury found Kater guilty of kidnapping and first-degree murder, a verdict that carried an automatic sentence of life without the possibility of parole.⁸ The Supreme Judicial Court affirmed the conviction on August 30, 2000, finding the trial judge had properly followed the earlier mandates on hypnotized witnesses.³

Kater’s Death in Prison

James Kater died on January 23, 2016, while still incarcerated, according to the Massachusetts Department of Corrections.⁷ Reporting indicated the cause was cancer.¹ He had been in custody for 18 years, never released after the fourth trial.

Mary Lou’s mother, Joanne Arruda, told the Providence Journal, “Now we know for sure that he will rot in hell. It’s a little too late. He should have passed away 38 years ago.”⁷ Raynham Police Chief James Donovan said the endless appeals had been a wound the community could not close, and that at least “the appeals are truly done.”

How Raynham Remembers Mary Lou Arruda

Mary Lou’s murder is widely described as the defining tragedy in Raynham’s history. “It’s like someone ripped the canvas of the Norman Rockwell painting,” longtime resident Ginny Jacques told WCVB. “Our town was never the same.”¹ The case is credited with exposing serious gaps in how Massachusetts handled sex offenders and contributed to the creation of the state’s sex offender registry and the elimination of a 24-hour waiting period before police could investigate a missing child report.⁵

September 8 is observed annually in Raynham as Child Safety Awareness Day.⁹ A memorial soccer field on King Philip Street bears her name, broke ground in 2000, and was driven forward by her brother Joseph, who said it was built “to be a reminder to people that it can happen to this town.” A local street is named Mary Lou Court, and residents continue to leave flowers at her grave. The Raynham Police Department uses each anniversary to review its policies on missing children and Amber Alerts, and on the 45th anniversary in 2023 the department said, “We will never forget her.”¹⁰

Her family carried the loss for the rest of their lives. Joanne Arruda stayed in the family home in Raynham and slept in her daughter’s bedroom. “It’s just something you live with,” she said. “It’s my room now.”¹ She refused to say the killer’s name in interviews. Both Joanne and her husband Adrian have since died; Adrian was killed in what was described as a freak accident when a truck fell on him while he was working on it.¹¹ Mary Lou’s youngest sister, Karen Daley, was five when her sister’s body was found; she grew up to become a special operations sergeant with the Massachusetts Department of Corrections, a career she attributed to the investigators who filled the family home during the case.

1
WCVB. With Death of Mary Lou Arruda’s Killer, Raynham Hopes Wounds Will Heal
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Enterprise News. Remembering Mary Lou Arruda
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FindLaw. Commonwealth v. Kater
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UPI. Fourth Jury Gets ’78 Murder Case
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Taunton Gazette. Missing Raynham Teenager Mary Lou Arruda
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vLex. Commonwealth v. Kater, 388 Mass. 519
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Providence Journal. Mother of Murdered Mass. Girl: Killer Will Now Rot in Hell
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Patriot Ledger. Kater Guilty, Murdering Raynham Girl
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Wicked Local. Mary Lou Arruda’s Legacy
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Raynham Police Department. Raynham Police Department Remembers Mary Lou Arruda After 45 Years
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Enterprise News. Raynham Mary Lou Arruda Brother Tony, Farmer, Cancer, GoFundMe