Investigators say it's a growing problem in neighborhoods across America: women lured to the United States from Latin America by the promise of jobs and a better life, only to be forced into sex work. NBC's Richard Lui reports.
The reporters and editors could hardly believe what they were hearing.
Over the past four months, NBC News investigative reporters have explored the trafficking of sex slaves in Latino brothels in the United States.
"It has been a story where the more we learned, the more we realized what we didn’t know," wrote NBC correspondent Richard Lui.
"In our editorial meetings, it was common for my editor to simply stare at me and say he did not believe what I was saying."
Here are links to the full series, Enslaved in America:
Azriel James Relph, The sex slaves next door. New form of trafficking invades US.
Map: Latino residential brothels spread nationally.
Interactive: How the sex slave supply chain feeds the U.S. market.
Slide show: Breaking the code: Common practices at brothels.
See all the videos at this link, including Web-only exclusives.