Human trafficking is big business in Canada, with girls, some as young as 12, coerced into sexual slavery. Ninety percent of the victims come from within Canada. They are controlled by pimps who may initially pose as their boyfriends, showering them with attention and gifts. Then they are threatened, beaten, held captive and even branded. The problem has become so big that police departments across the country are now devoting resources to fight human trafficking. CBC reporter Ioanna Roumeliotis joined undercover investigators as they try to help young women out of the sex trade. Warning: this story contains mature subject matter. Viewer discretion is advised.

From the Curio channel: News in Review.