On January 12, 2022, 47-year-old acupuncturist Jon Satoshi Tokuhara was shot and killed inside his clinic, Tokuhara Acupuncture and Healthcare, in Waipahu, Hawaii. The victim had been involved in an extramarital affair between May and July 2021 with a client, Joyce Thompson, whose husband, Eric Thompson, uncovered the relationship via home video surveillance. Following the discovery, Joyce ended the affair, signed a postnuptial agreement surrendering assets and custody to Eric in the event of a divorce, and agreed to cease consulting psychics. Surveillance video near Tokuhara's office on the evening of the murder captured a white Chevrolet Silverado crew cab pickup truck matching Eric Thompson's vehicle, along with a masked individual wearing a white bucket hat who entered the office at 6:15 p.m. and exited 48 seconds later after shooting Tokuhara in the face. The suspect dropped the bucket hat while leaving, which was later retrieved by a bystander and yielded DNA matching Thompson. Thompson was arrested on February 14, 2022. After an initial mistrial in 2023, Thompson was convicted of second-degree murder and firearm charges on February 25, 2025, and sentenced on June 27, 2025, to life imprisonment with parole eligibility after 15 years.
Country: United States
State/Province: Hawaii, United States
City/Region: Waipahu
Incident Type: Murder
Relationship Status: Extramarital relationship
Relationship Duration: Approximately 3 months (affair)
Incident Date: Jan. 12, 2022
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How the relationship or connection began.
Approximately 3 months (affair)
Important relationship phases recorded for this case.
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Contributing factors and possible motives from the available sources.
2022-01-12
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English labels are shown first. Original-language titles are preserved for source verification.
Dr. Grande · Original language: English
Affair with the Wrong Man’s Wife Results in 48-Second Mystery Murder | Jon Tokuhara Case Analysis
Infidelity
The victim, an unmarried acupuncturist, engaged in multiple extramarital affairs with married female clients, communicating through covert social media accounts. When the spouse of one client discovered the affair via home security surveillance, the extramarital relationship was terminated, and legal/financial sanctions (a postnuptial agreement) were imposed on the wife. Despite the end of the affair months prior, the aggrieved husband harbored lingering resentment and perceived the victim as an ongoing threat to his marriage and self-image, culminating in a planned retaliation.
Police recovered three spent .22 long rifle casings from the crime scene and located $3,900 in cash in a backpack near the victim. Instagram message logs on Tokuhara's phone led investigators directly to Joyce Thompson and her husband Eric. Surveillance cameras captured a white Chevrolet Silverado matching Thompson's truck, as well as footage of an intruder in a white bucket hat entering the clinic at 6:15 p.m. and leaving 48 seconds later. The hat fell off nearby and was retrieved by a homeless person; DNA testing linked the hat to Eric Thompson. Thompson was arrested on February 14, 2022. A mistrial occurred on August 4, 2023 (hung jury 9-3). In a retrial on February 25, 2025, Thompson was convicted of second-degree murder and firearm offenses, receiving a life sentence with parole possibility after 15 years on June 27, 2025.
Defense arguments highlighted potential timeline discrepancies, noting Jon Tokuhara's cell phone was unlocked at 6:18 p.m., three minutes after the surveillance footage showed the suspect exiting the building at 6:15 p.m. Defense counsel also challenged the reliability of the state DNA laboratory's procedures on the bucket hat and cited Tokuhara's multiple affairs and potential gambling activities as alternative motives involving unverified third parties.
Investigative evidence reconstructed the timeline as follows: Eric Thompson departed his home in his Chevrolet Silverado at 5:20 p.m. on January 12, 2022, after removing a bed-mounted toolbox to alter the vehicle's appearance. He arrived near Tokuhara's clinic around 5:57 p.m., approached on foot dressed in dark clothing, sunglasses, and a bucket hat, entered through the back door at 6:15 p.m., fired three .22 caliber rounds into Tokuhara's face, and exited 48 seconds later. While retreating, Thompson dropped his bucket hat. He returned home by 6:47 p.m., burned items in his yard around 7:34 p.m., and reattached his truck toolbox later that evening.
Extramarital affairs involving high levels of emotional investment, explicit digital evidence, and discovery by an aggrieved spouse carry heightened potential for violent escalation, particularly when the non-infidel spouse exhibits obsessive control or violent fixed ideation. Surveillance tracking, removal of vehicle accoutrements, and targeted intrusion into a victim's workplace indicate a high degree of lethal premeditation.
Digital footprints on private messaging platforms frequently serve as critical investigative pathways in violence linked to extramarital conflicts. Physical evidence accidentally dropped during entry or egress, combined with residential and commercial CCTV network integration, remains a decisive factor in corroborating circumstantial vehicle movement timelines.
The primary early signal was Eric Thompson's discovery of covert video surveillance at his home in July 2021 showing his wife's affair, followed by the execution of a coercive postnuptial agreement in December 2021.
Key clues included the specific white Chevrolet Silverado crew cab pickup observed on neighborhood CCTV, thousands of erased Instagram messages recovered from the victim's phone, and the white bucket hat dropped 250 feet from the crime scene.
The strongest evidence comprised DNA on the discarded white bucket hat matching Eric Thompson (statistically several trillion times more likely than a random individual), matching neighborhood vehicle surveillance timestamps, and video of fire/burn marks on Thompson's property shortly after the crime.
Lily Tokuhara reported finding her son unresponsive in a pool of blood inside his office on the morning of January 13, 2022. Eric Thompson testified at trial that he was unloading bricks at a dump and making a cash purchase at a drugstore during the time of the murder, though police could not corroborate this alibi.
Initial investigations considered robbery or gambling disputes due to $3,900 in cash found near the victim, but analysis of Tokuhara's Instagram messages shifted the focus exclusively to an extramarital revenge motive involving Eric Thompson.
The exact firearm used in the killing was never recovered by law enforcement.