MSNBC Undercover

Go behind the scenes with investigators as they look into the horror that is human trafficking. Our cameras and crew go inside massage parlors and other shops in which investigators have indicated that vulnerable immigrant women are being forced into prostitution.

Hear more from experts featured in MSNBC's new documentary as they discuss the state of sex trafficking in the U.S.

Her street name is Barbie. Her real name: Heather. She's one of the many teens out on the streets of Detroit working in what is known as the oldest profession: prostitution. Will FBI agents convince her to leave the life behind?

In the English town of Cheltenham – police are planning a major bust in Operation Pentameter 2, their nationwide crackdown on sex trafficking. The mulitiple, simultaneous raids will be complicated and require great coordination.

TODAY’s Natalie Morales talks to Edward Price, detective sergeant for the Michigan State Police, and Kevin Perkins, FBI’s chief of the criminal division, about the sex trade in America as highlighted in the upcoming MSNBC documentary, “Sex Slaves: Motor City Teens.

On the streets and suburbs of Detroit, Michigan, FBI, State and local police are taking part in "Cross Country 5," a nationwide dragnet to crack down on those who exploit juveniles in the sex trade.

Watch as two veteran female officers prepare to go undercover as prostitutes to go after the johns that help drive the sex trade.