Stella Nickell laced pain relief capsules with cyanide to secure insurance payouts after her husband’s death.
Stella Nickell’s actions in 1986 turned ordinary household products into lethal traps across Washington state. She targeted her husband first and then extended the scheme to a stranger to disguise the crime as random product tampering. The case exposed gaps in consumer product safety laws and led to one of the earliest federal prosecutions for such tampering.
Nickell’s plan relied on careful planning and misdirection. She purchased multiple bottles of Excedrin, removed capsules, replaced the contents with cyanide, and returned the contaminated packages to store shelves. One of those bottles killed Sue Snow, a bank manager who had no connection to Nickell. The same method had already claimed the life of Nickell’s husband, Bruce, weeks earlier.
Background
Stella Nickell grew up in the Pacific Northwest and married Bruce Nickell in 1974. The couple lived in Auburn, Washington, where Bruce worked in construction and Stella held various jobs. Their marriage faced financial pressures, including debts and insurance policies that listed substantial payouts in the event of death.
Bruce suffered from chronic pain and regularly used over-the-counter painkillers. Stella later claimed he drank heavily, though family members disputed the extent of any alcohol issues. In early 1986 the household held several life insurance policies on Bruce that totalled more than $175,000.
Financial Pressures
Court records show Stella had inquired about increasing coverage shortly before Bruce’s death. She also researched cyanide and its effects, according to witness statements presented at trial. These details formed part of the prosecution’s case that the crimes were motivated by money rather than any sudden domestic dispute.
The Crimes
On 5 June 1986 Bruce Nickell collapsed at home after taking Excedrin capsules. He died later that day. Initial medical examination attributed the death to emphysema. Stella collected the insurance money without immediate suspicion.
Less than two weeks later, Sue Snow died after taking capsules from a different Excedrin bottle purchased at a local store. An autopsy revealed cyanide. Health officials issued warnings and removed thousands of bottles from shelves. The Food and Drug Administration confirmed the presence of cyanide in several containers, triggering a nationwide alert.
Stella Nickell contacted authorities to report that her husband’s death might also involve cyanide. She provided a bottle from her home that tested positive. Investigators noted the timing and the fact that she had already received insurance proceeds.
Product Tampering Method
Nickell bought six bottles of Excedrin, opened them in her kitchen, and substituted cyanide mixed with other substances to mimic the appearance of the original powder. She resealed the bottles and placed four back on store shelves. The remaining two she kept for use at home. This approach aimed to create the appearance of a random tamperer striking multiple locations.
Investigation
Federal agents from the Food and Drug Administration and the FBI joined local police. They traced the contaminated bottles to specific manufacturing lots and store purchases. Stella’s statements about her husband’s symptoms drew attention because they matched cyanide poisoning more closely than the initial emphysema diagnosis.
Investigators examined Stella’s financial records and interviewed family members. Her daughter, Cynthia Hamilton, provided key testimony that Stella had discussed killing Bruce for insurance money. Cynthia also recalled her mother experimenting with various poisons.
Evidence Collection
Forensic analysis matched the cyanide in the store bottles to the same source used in Bruce’s death. Stella’s fingerprints appeared on the altered capsules in one recovered bottle. She had also checked out library books on poisons and product tampering cases.
Trial and Conviction
Stella Nickell stood trial in federal court in Seattle in 1988. Prosecutors charged her with product tampering and two counts of causing death through that tampering. The case marked the first federal conviction under the 1983 Anti-Tampering Act for deaths resulting from product contamination.
The jury heard testimony from Cynthia Hamilton and forensic experts. Stella maintained her innocence, suggesting an unknown tamperer had acted. After several days of deliberation the jury returned guilty verdicts on all counts.
Sentencing
The court imposed two ninety-year prison terms. Nickell appealed without success. She remains incarcerated at a federal facility.
Psychological Profile
Trial evidence portrayed Nickell as methodical and focused on financial gain. She showed no signs of broader ideological motives or thrill-seeking behaviour common in some serial cases. Instead, the crimes reflected a narrow plan to eliminate her husband while creating cover through an apparent random attack.
Psychiatric evaluations conducted after conviction noted traits consistent with planning and deception but did not establish any formal diagnosis that altered legal responsibility.
Legacy
The case prompted stricter federal rules on product packaging and tamper-evident seals. Pharmaceutical companies accelerated the shift to blister packs and sealed containers. Public awareness of consumer product risks increased, leading to more rapid reporting of suspected contamination incidents.
Sue Snow’s family advocated for continued improvements in product safety. Bruce Nickell’s relatives expressed ongoing grief over the betrayal within their own household.
Conclusion
Stella Nickell’s crimes demonstrated how personal financial motives could exploit everyday consumer products and endanger strangers. The investigation and conviction reinforced federal authority over product tampering cases and shaped industry practices that remain in place today.
Harvard References
FBI. (1988) United States v. Stella Nickell. Court records. Seattle: United States District Court.
Seattle Times. (1986–1988) Coverage of Excedrin cyanide deaths and trial proceedings. Seattle: Seattle Times archives.
U.S. Food and Drug Administration. (1986) Report on cyanide contamination in over-the-counter analgesics. Washington, D.C.: FDA.
Hamilton, C. (1988) Trial testimony transcript. United States v. Stella Nickell. Seattle: Court records.
Associated Press. (1988) ‘Woman convicted in product-tampering deaths’, 9 December.
Olsen, G. (1993) Bitter Almonds: The True Story of a Serial Killer. New York: Warner Books.
Rule, A. (2001) ‘The Excedrin murders’, in Empty Promises. New York: Pocket Books.
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