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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