This interdisciplinary edited collection is the first internationally to comprehensively explore the harms immigration detention imposes beyond the ‘detainee’. Bringing together research from North America, the UK, Europe and Australia, it shows how the harms immigration detention imposes ramify beyond singular bodies, moments and locations – reverberating through families and communities and echoing across time. The book is structured in three parts. Part One: Human Costs, examines the harms immigration detention imposes on people who are not personally incarcerated, but whose lives are nonetheless entangled with detention regimes. Part Two: Societal Consequences highlights the corrosive impacts of immigration detention at the societal level, including the role migrant incarceration plays in naturalising and perpetuating inequalities and injustices. Part Three: Ending the Harm interrogates the possibilities of detention reform and detention abolition. This book will be a key reference text for scholars and students in the social and behavioural sciences who are interested in immigration detention, human rights and/or incarceration.