Moncrieff Moncrieff

Moncrieff’s Murder Club: Poisoned by Accident

Sep 23, 2026 · 16m

Summary

Cassie Delaney explores three bizarre cases of accidental mass poisoning. She details the story of Typhoid Mary, a cook who unknowingly spread disease for decades, and the 1858 Bradford incident where a druggist’s error with arsenic led to the first poison labeling laws. The episode concludes with a 1994 case where a dying woman’s body inadvertently released a chemical weapon, incapacitating hospital staff.

Topics discussed

Sponsor: California Closets Intro: Murder Club and Typhoid Mary Mary Mallon's background and cooking career 1906 outbreak at Warren's summer home George Soper's investigation and tracing Mary Mary's resistance and capture by health officials Quarantine on North Brother Island Release, violation, and return to quarantine Mary's death and legacy of the Typhoid Mary Transition to the Bradford Sweets Poisoning Victorian sweet making and adulteration with daff The arsenic mix-up at the druggist Production and sale of the poisoned humbugs The outbreak, deaths, and legal aftermath Legacy: Pharmacy Act and Humbug Billy's fate Gloria Ramirez's arrival at Riverside General Staff collapsing and strange symptoms in the ER Evacuation and Gloria's death Investigation and Lawrence Livermore analysis The DMSO to Dimethyl Sulfate theory Reflections on the incident and healthcare Outro and sponsor: OrderlyMeds
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