The San Diego-Tijuana border remains one of the most heavily trafficked international crossings in the world. And that traffic has a dark side: humans, especially girls, being bought, sold, and forced into labor or sex.

A recent high-profile case in San Diego netted dozens of arrests for sex trafficking, but there are few resources for victims on the Mexican side of the border. A resident of San Diego has opened a shelter in Tijuana for victimized girls.

Brooke Binkowski reports it's one of only two in all of Mexico.