In this wonderful, wide-ranging book, Amit Prakash uncovers the many layers of French anxiety over North African immigration. With great theoretical sophistication and thorough archival detective work, he takes the reader through police efforts to come to terms with, to understand, a process that consistently baffled them, to make North African immigration to Paris comprehensible and, ultimately, manageable. While their efforts famously failed, they laid the foundation for durable patterns of discrimination and inequality that remain of urgent concern.