Stella Nickell laced Excedrin capsules with cyanide to murder her husband and a stranger in Washington state.
Stella Nickell turned ordinary pain relief products into lethal weapons during two separate incidents in 1986. Her actions claimed the lives of Bruce Nickell, her husband of many years, and Sue Snow, a bank manager who had no connection to the family. The case marked the first federal conviction for product tampering resulting in death.
Authorities initially treated both deaths as isolated tragedies until evidence pointed to deliberate contamination. Nickell stood to gain substantial insurance payouts from her husband’s passing. The investigation revealed a calculated effort to mimic the 1982 Tylenol poisonings that had occurred years earlier in Chicago.
Background
Stella Nickell grew up in the Pacific Northwest and married Bruce Nickell in the early 1970s. The couple lived in Auburn, Washington, where Bruce worked in the logging industry. Their marriage faced financial pressures and periods of tension, yet they remained together for over a decade.
Nickell held several jobs, including work at a local plant nursery. She maintained an interest in aquariums and kept tropical fish at home. Court records later showed that she purchased life insurance policies on Bruce that carried double-indemnity clauses for accidental death.
Bruce suffered from emphysema and took pain medication regularly. On 11 June 1986 he collapsed at home after ingesting what appeared to be routine Excedrin tablets. Paramedics pronounced him dead at the scene.
The Poisonings
Sue Snow, aged 40, experienced similar symptoms on 11 June 1986 while preparing for work. She took Excedrin for a headache and collapsed in her bathroom. Her daughter found her unresponsive. An autopsy detected cyanide in both victims.
Investigators traced the contaminated bottles to stores in the Auburn and Kent areas. Four additional bottles contained cyanide but had not been purchased. The tampering appeared limited to the Seattle suburbs.
Nickell reported her husband’s death to insurance companies within days. She pressed claims worth more than $100,000. When questioned by police she described Bruce’s health problems and suggested possible accidental overdose.
Investigation
The FBI joined the case because the deaths involved interstate commerce and product tampering. Agents examined manufacturing records from Bristol-Myers, the maker of Excedrin. No cyanide appeared in factory batches.
Detectives focused on the timing of the insurance policies. Nickell had increased coverage shortly before Bruce’s death. A fingerprint on a cyanide order form led agents to a local chemical supplier.
Nickell’s daughter, Cynthia Hamilton, contacted authorities in 1987. She stated that her mother had discussed poisoning methods and had tested cyanide on fish. This testimony shifted the inquiry toward Nickell as the primary suspect.
Capture and Trial
Federal agents arrested Stella Nickell on 9 December 1987. She faced charges of product tampering and mail fraud. Prosecutors presented evidence of the insurance motive and the daughter’s statements.
The trial took place in Seattle federal court. The defence argued that the evidence remained circumstantial and that the daughter sought reward money. Jurors rejected those claims after three days of deliberation.
Nickell received a 90-year sentence in 1988. She maintained her innocence throughout the proceedings and subsequent appeals. No successful challenges altered the conviction.
Psychological Profile
Court-appointed evaluators described Nickell as methodical and focused on financial gain. She displayed little outward emotion when discussing the deaths. The pattern matched other cases in which perpetrators used poison to avoid direct confrontation.
No formal diagnosis of mental illness emerged during psychiatric interviews. Prosecutors emphasised greed rather than delusion or compulsion. The crimes required planning, including the purchase of cyanide and the selection of public retail locations.
Legacy and Cultural Impact
The Nickell case prompted stricter federal guidelines on over-the-counter medication packaging. Manufacturers adopted tamper-evident seals more widely. Congress later strengthened penalties for product tampering under the Federal Anti-Tampering Act.
The investigation highlighted the challenges of tracing cyanide sources in consumer products. It also demonstrated how reward programmes and family cooperation can advance stalled cases.
Nickell remains incarcerated at a federal facility. No parole has been granted. The case continues to appear in studies of female offenders who commit murder for financial reasons.
Conclusion
Stella Nickell’s crimes exposed vulnerabilities in everyday consumer products and tested the limits of forensic investigation in the 1980s. The deaths of Bruce Nickell and Sue Snow resulted from deliberate acts driven by insurance motives. The conviction established a legal precedent that still guides tampering prosecutions today.
Bibliography
FBI. (1988) Stella Nickell: Product Tampering Investigation. Washington, DC: Federal Bureau of Investigation Records.
Seattle Times. (1987) ‘Auburn Woman Charged in Cyanide Deaths’, 10 December.
United States v. Nickell, 1988. 883 F.2d 824 (9th Cir.).
Douglas, J. and Olshaker, M. (1995) Obsessive Hearts. New York: Pocket Books.
Washington State Department of Health. (1986) Autopsy Reports: Bruce Nickell and Sue Snow. Olympia: State Archives.
Associated Press. (1988) ‘Nickell Sentenced to 90 Years’, 4 May.
Rule, A. (2001) Dead by Sunset. New York: Pocket Books.
Bristol-Myers Squibb Corporate Archives. (1986) Excedrin Tampering Incident Summary. New York: Company Records.
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