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Case Description

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Katherine "Kathy" Dolan Heckel, a 40-year-old woman from Mill Hall, Pennsylvania, disappeared on July 15, 1991. She was last seen leaving her job at the International Paper Company in Lock Haven during her lunch break. Kathy had called her children earlier that day, mentioning she planned to run some errands and eat lunch alone, but she never returned to work. Her car was found two days later, abandoned near Lock Haven Hospital with no immediate signs of foul play.

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Last Seen: Jul 15, 1991

Victim Details

Mar 14, 2012

Apr 23, 2020

Katherine

Heckel

73

40

63 inches

66 inches

130 lbs

150 lbs

White / Caucasian

Female

On a summer day in July 1991, 40-year-old Katherine "Kathy" Heckel, a devoted mother and reliable employee from Mill Hall, Pennsylvania, vanished without a trace. She was last seen on July 15, 1991, leaving her job as a management secretary at the International Paper Company in Lock Haven for her lunch break. Before leaving, she called her two children, telling them she had some errands to run and would be eating alone. Katherine drove her silver 1990 Ford Festiva out of the company parking lot and was never seen again. Her family reported her missing the following day. The initial search for Katherine was extensive, involving police, firefighters, and volunteers who scoured nearby forests and rural areas for weeks, but found no clues. Two days after she disappeared, her car was discovered abandoned in the parking lot of Lock Haven Hospital. The car was in third gear with the emergency brake on, but the keys were missing, and the vehicle yielded no significant evidence of her whereabouts. The investigation quickly focused on one of Katherine's coworkers, Loyd Groves, with whom she had been having an affair. Friends revealed that Katherine had expressed a desire to end the relationship, but Groves was resistant. She had told a friend she was fearful of him, accusing him of stalking her and sending her lewd messages. On the very morning she went missing, Katherine and Groves were witnessed having a loud argument, during which he was seen chasing her through the paper plant. Groves's van was also seen leaving the company parking lot around the same time as Katherine's car. When questioned, Groves claimed to have no memory of his whereabouts at the time of her disappearance and seemed anxious, repeatedly asking if the police considered him a suspect. His behavior, coupled with the troubled nature of their relationship, made him the primary person of interest in the case. Katherine's husband of eighteen years was away on a two-week National Guard training exercise at the time of her disappearance and was quickly ruled out as a suspect. Years passed without a resolution, and in 1998, Katherine Heckel was declared legally dead. The case, however, was never closed. A significant breakthrough came with advancements in DNA technology. Bloodstains had been found in Groves's van shortly after Katherine vanished, specifically on the upholstery, middle seat, and interior light. At the time, testing could only determine that it was Type A human blood, the same as Katherine's. Years later, modern DNA analysis confirmed with mathematical certainty that the blood belonged to Katherine Heckel. This crucial piece of evidence, combined with witness testimony and Groves's suspicious behavior, led to his arrest in January 2015. In 2018, Loyd Groves was tried and convicted of third-degree murder. He was sentenced to 10 to 20 years in prison, the maximum allowed for the crime at the time of Katherine's disappearance. Despite the conviction, Groves has maintained his innocence and has never revealed what happened to Katherine. Her body has never been found, leaving her loved ones without a final resting place and complete closure in a case that haunted the small Pennsylvania community for decades.

Jul 15, 1991

Mill Hall

Pennsylvania

Clinton County

17751

No

11510

Pennsylvania State Police

Mill Hall

Pennsylvania

Clinton County

17751

Kimberly Patterson

Criminal Investigator

113 Boyd Road, Pennsylvania

5707266000

State

Law Enforcement

F04-0440825

1991-07-16

Pennsylvania State Police

Brown

Brown

Brown

05/27/2026


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