The Madness Of Crowds by Louise Penny

In a small Canadian village, the peaceful post-pandemic world is disrupted when a controversial statistician's lecture ignites a fierce debate on the ethics of population control. As tensions rise, Chief Inspector Armand Gamache is called to investigate a murder that seems to be linked to the divisive ideas presented. Amidst the chaos, Gamache must navigate a web of secrets, lies, and moral dilemmas, all while grappling with his own beliefs and the impact of collective hysteria on individual actions. The story delves into the complexities of human nature and the fine line between sanity and madness.