Quarantine has shaped our world, yet it remains misunderstood. It is our most powerful response to uncertainty, but it operates through an assumption of guilt: in quarantine, we are considered infectious until proven safe. A very timely account of the idea and the reality of quarantine around the world, examining not only the history but the implications of a system that our lives rely on. A thought-provoking exploration of the meaning of freedom, governance, and mutual responsibility.