. >> reporter: sergeant mike guyer heads portland's sexual assault detail. it is a classic case, he says. cute, young girls are being targeted by pimps. >> they look for them in the malls, on myspace, facebook. they look for them in the schools, walking around downtown or in the parks and they strike up a friendship with them, and the tactic they use is, they work to identify what their needs are. how is it going at home? and then they will use the information that this child is giving them and they will become their rescuer. i can fix all that. you're way too mature to be treated like that. i can get you nice clothes, take care of you. and suddenly, they're lavished, all the goods and affection and everything and they think, wow, this person really cares about me. >> they might say to you, like, you know, i lived through more than most 4-year-olds have lived through. and they'll say, i really love justin bieber. >> reporter: this is a victim's advocate. she sees girls from all over the country brought to portland. >> people have been tied up with saran wrap