all right, copy, we'll put them on that northeast corner. >> investigators with the oakland pd's human trafficking task force are out again on the city's notorious prostitution track, conducting undercover stings. but today they are not after the women, they are targeting the buy side of the equation, the johns. >> felicia's got one working on the green ford pickup. >> yeah, it looks like she's going to go over there and make contact with him in the parking lot. >> in the first few hours of work the team apprehends nearly 20 unsuspecting johns. but as the light fades and day becomes night, an entirely different sort of creature comes out to prowl the track. >> looks more like the pimp type, too. >> he was eyeballing me hard over here. >> pimps are always on the lookout for new girls. we're going to be the new booty on the street tonight, and they're going to know that. >> if you have a couple of fresh faces out there, new girls trying to make money, trying to work on the track, well, a pimp will see that as a sign of disrespect for one, and two, he's also going to want to recruit them.