Stella Nickell laced over-the-counter painkillers with cyanide to murder her husband and disguise the act as random product tampering.
Stella Nickell carried out two deliberate poisonings in Washington state during 1986. She targeted her husband Bruce with cyanide placed inside Excedrin capsules. To mask the crime as part of a wider contamination incident, she also poisoned a second bottle that killed an unrelated woman, Susan Snow. The case stands out because it tested early federal anti-tampering laws and revealed how insurance motives could intersect with consumer product safety.
Nickell’s actions prompted a detailed federal investigation that examined pharmacy records, bottle lot numbers and witness statements. Prosecutors presented evidence of her financial planning and repeated tampering attempts. The trial highlighted the challenges of proving product contamination when the perpetrator acts alone and without accomplices.
Background
Stella Nickell grew up in the Pacific Northwest and married Bruce Nickell in the 1970s. The couple lived in Auburn, Washington, where Bruce worked in a local plant. Their marriage had periods of tension, yet the pair remained together. Stella held several low-paying jobs and managed household finances. Court records later showed she had taken out multiple life insurance policies on Bruce without his full knowledge.
Bruce suffered from health complaints that included headaches and respiratory issues. On 5 June 1986 he collapsed at home after taking Excedrin capsules. Paramedics found him unresponsive and he died shortly afterwards. An initial autopsy listed the cause as emphysema. No suspicion of foul play arose at that stage.
The Crimes
First Poisoning
Stella purchased Excedrin capsules and replaced the contents of several with cyanide mixed into a paste. She returned the altered bottles to store shelves. Bruce ingested the poisoned capsules on the morning of his death. Toxicological tests later confirmed lethal levels of cyanide in his system.
Second Poisoning
Thirteen days later, Susan Snow, a bank manager from nearby Kent, purchased an Excedrin bottle from a different store. She took two capsules and died the same day. Investigators quickly linked the two deaths through identical cyanide traces and matching lot numbers. The connection shifted the inquiry from isolated medical events to deliberate tampering.
Nickell had placed additional poisoned bottles in several stores to strengthen the appearance of random contamination. Only the two victims ingested the capsules. No further deaths occurred.
Investigation
Federal agents from the Food and Drug Administration and the FBI joined local police. They traced the Excedrin lot and interviewed hundreds of shoppers and pharmacy staff. Stella Nickell contacted authorities early, offering information about her husband’s purchase. Detectives noted inconsistencies in her account of the bottle’s origin.
Insurance documents revealed Stella stood to receive more than $70,000 from policies taken out shortly before Bruce’s death. She had also inquired about additional coverage weeks earlier. Laboratory analysis showed the cyanide in both deaths came from the same industrial source. Stella’s daughter, Cynthia Hamilton, later provided testimony that her mother had discussed poisoning methods and had tested small amounts on animals.
Capture and Trial
Stella Nickell was arrested in December 1987. Prosecutors charged her under the Federal Anti-Tampering Act of 1983, the first such case to reach trial. The government presented evidence of her insurance applications, her purchase of cyanide from a local supplier and her attempts to plant additional bottles.
The defence argued that the evidence was circumstantial and that another individual could have tampered with the products. After a three-week trial the jury convicted Nickell on five counts, including product tampering and two counts of causing death. In 1988 she received a ninety-year sentence. She has remained in federal custody since that time.
Psychological Profile
Court-appointed evaluations described Nickell as methodical and focused on financial gain. She showed no signs of broader delusions or psychotic symptoms. The crimes required planning, repeated handling of a toxic substance and an ability to maintain a normal routine while under investigation. Experts noted the unusual step of creating a second victim to support a cover story, a feature that distinguishes this case from many domestic poisonings.
Legacy and Legal Impact
The Nickell case prompted stricter federal guidelines on reporting and investigating suspected product tampering. Manufacturers increased the use of tamper-evident packaging for over-the-counter medicines. The successful prosecution demonstrated that the 1983 statute could be applied even when the offender acted without accomplices or ideological motive.
No copycat incidents linked to this case emerged in the following years. The events remain a reference point in discussions of consumer protection and insurance-related homicide investigations.
Conclusion
Stella Nickell’s poisonings resulted in two deaths and a lengthy federal sentence. The investigation relied on forensic tracing, insurance records and witness statements rather than eyewitness accounts. The case illustrated both the reach of early anti-tampering legislation and the investigative steps required when product contamination appears deliberate.
Bibliography
FBI. (1988) United States v. Stella Nickell. Court records. Washington, DC: Federal Bureau of Investigation.
Seattle Times. (1987) ‘Cyanide deaths lead to arrest in Auburn’, 10 December.
Washington State Department of Health. (1986) Toxicology report on Excedrin-related fatalities. Olympia: State of Washington.
United States Attorney’s Office. (1988) Press release on first federal product-tampering conviction. Seattle: District of Washington.
CNN. (2018) ‘Stella Nickell case: 30 years later’, 5 June.
New York Times. (1988) ‘Woman convicted in cyanide killings’, 18 May.
Associated Press. (1987) ‘Insurance policies key in Washington poisoning probe’, 12 December.
Harvard Law Review. (1989) ‘Federal anti-tampering statute applications’, 102(4), pp. 789–812.
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