Just outside Toronto, a 14-year-old Canadian girl was auctioned on the internet for men to purchase by the hour. A young woman was taken by slave traders from an African war zone to Edmonton to earn greater profits by exploiting her in prostitution. A gang called Wolfpack recruited teenagers in Quebec and sold them for sex to high-profile men in the community.

The global problem of human trafficking is only beginning to be recognized in Canada, even though it has been hidden in plain sight. In Invisible Chains, Benjamin Perrin, an award-winning law professor and policy expert, exposes cases of human trafficking, recording in-depth interviews with people on the front lines—police officers, social workers, and the victims themselves—and bringing to light government records released under access-to-information laws.