New Sweden, Maine, named for its community of Swedish settlers, was a quiet farming community in the early 2000s. Everyone knew everyone in the town of six-hundred people. When a mysterious illness breaks out one morning after church, it seems too suspicious to purely be coincidence.
Sources:
https://wgme.com/news/local/special-report-new-sweden-arsenic-poisonings
https://www.latimes.com/archives/la-xpm-2003-may-19-na-arsenic19-story.html
https://wgme.com/news/local/special-report-new-sweden-arsenic-poisonings