Murder Mayhem UK

Murder Mayhem UK

Murder

The Copycat in the Medicine Cabinet

The Excedrin poisonings of 1986.

Sam H Arnold's avatar
Sam H Arnold
Nov 02, 2026
∙ Paid

Chicago was not the only place that suffered from a killer who used the medicine cabinet as their loaded gun. The same thing happened in the Pacific Northwest.

The Excedrin poisonings in 1986 were just as horrific and also aided in the birth of tamper-proof packaging to protect against these incidents occurring again and again. However, unlike the Chicago poisoning, this time someone was convicted of the crime.

Death of the Open Bottle

Four years after the nightmare in Chicago, in June 1986, a similar tragedy happened 2,000 miles away in the Pacific Northwest.

Sue Snow, a forty-year-old bank executive, woke in her home in Auburn, Washington, with a mild headache. She took two Extra-Strength Excedrin capsules from an open bottle. Within minutes, she collapsed on her bathroom floor. She would later die at Harborview Medical Centre.

Doctors were quicker to react this time and detected the distinct bitter-almond smell of cyanide during the autopsy. Local law enforcement and the FDA braced themselves for another indiscriminate poisoner to emerge.

User's avatar

Continue reading this post for free, courtesy of Sam H Arnold.

Or purchase a paid subscription.
© 2026 Sam H Arnold · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture