Show Notes
In this episode of the Explaining History Podcast, we are joined by award-winning French Canadian author Mireille Gagné to discuss her acclaimed novel, *Horsefly* – a powerful, genre-defying work inspired by a top‑secret biological warfare laboratory that operated on Québec's Grosse Île during the Second World War.
The novel draws on a forgotten chapter of shared Allied history. In 1942, British, American, and Canadian forces established a clandestine facility on Grosse Île – an island in the St. Lawrence River that had previously served as a quarantine station for European immigrants. Their mission: to develop anthrax as a weapon of mass destruction, producing enough to kill the world's population thirty times over. The operation, known as Project M, was part of a broader effort that included the infamous Gruinard Island tests in Scotland – where anthrax spores rendered the island uninhabitable for decades.
But Mireille's story is not primarily about scientists and generals. It is about the ordinary people – the residents of neighbouring islands, many of them French Canadian, who were recruited as labourers, caretakers, and assistants. They slaughtered cattle, handled organs, washed themselves with harsh red soap, and transported dangerous materials – often without understanding the full extent of the risks. They worked in silence, bound by military secrecy, and carried a heavy burden that they never fully spoke about.
Mireille grew up on Île‑aux‑Grues, part of the same archipelago as Grosse Île. She heard fragments of these stories as a child – whispered, half‑remembered, dismissed by some as dementia. Her mother, who arrived on the island in the 1970s, tried to ask questions but was met with silence. It was only when Mireille began interviewing grandchildren that the stories began to emerge – piecemeal, tentative, shameful. The men who had worked there rarely spoke before they died; the families who survived did not want to revisit the past.
*Horsefly* moves between the 1940s and the present day. In the contemporary timeline, a suffocating heatwave grips Québec, violence is on the rise, and a man caring for his grandfather with dementia must journey back to Grosse Île to understand the cryptic wartime past that is consuming him. The novel explores themes of memory, transhumanism, and the long shadow of war – a reminder that the "good guys" in the Second World War also pursued weapons of unimaginable destructiveness.
**Topics covered:** - The top‑secret Grosse Île biological warfare laboratory (Project M) - Operation Vegetarian and the Gruinard Island anthrax tests - Britain's Porton Down and the Allied biological weapons programme - The role of Canadian scientists, including Frederick Banting - The recruitment of local French Canadian labourers - The silence and shame of those who worked there - Mireille's personal connection to the story - The novel's exploration of memory, trauma, and transhumanism - The contemporary relevance of biological weapons research
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*Mireille Gagné's Horsefly is published by New Cross Press and is available now. Please consider buying from an independent bookshop or directly from the publisher.*
*If you enjoy the podcast, please consider supporting us – we are migrating from Patreon to Substack. Details in the show notes.*
Explaining History helps you understand the 20th Century through critical conversations and expert interviews. We connect the past to the present. If you enjoy the show, please subscribe and share. ▸ Support the Show & Get Exclusive Content Become a Patron: patreon.com/explaininghistory ▸ Join the Community & Continue the Conversation Facebook Group: facebook.com/groups/ExplainingHistoryPodcast Substack: theexplaininghistorypodcast.substack.com ▸ Read Articles & Go Deeper Website: explaininghistory.org
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