Foul Play: A Historical True Crime Podcast · Shane L. Waters, Wendy Cee, Gemma Hoskins
Netherlands: Angel of Death's Many Victims
December 16, 2025·33 min·3 clips
A doctor connects identical symptoms in two patients to the same caregiver, suspecting arsenic poisoning by the woman everyone called 'Good Mary'.
As heard by us
A grim study of how respectability hid a methodical poisoner.
The episode keeps its focus on Maria Swanenberg as a caregiver who used ordinary routines of trust against the people around her. Its strongest contrast lies between her public life, with regular church attendance and charitable work, and the violence that kept unfolding in…
Why you'd press play
For a poisoner case hidden inside charity and care.
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