Adam Johnson, who now lives in Vancouver, Washington, was part of a team that helped catch people. Such as, a man from Kent.

"He had a wife and a child," Johnson says.

That man began an online relationship with a 13-year-old girl named "Ashley."

"He got to know Ashley, and Ashley got to know him," Johnson tells KOMO News. "Eventually he set a date to come out to Pullman and meet her in person."

The Internet relationship lasted six weeks, with Johnson watching the entire time. When the man finally drove out east for the meeting, Johnson and his team were ready, having the guy's description and license plate in hand.

"That's when we called the sergeant in," says Johnson.

The cops moved in and confronted the guy. He denied everything, and set himself up for the surprise of his life.

"We have all your chat logs, you've been talking to a girl named Ashley," Johnson quotes the officer. "And the guy says 'No, she told me she was 18' and still denied it. Finally, the sergeant looks over at me (Johnson) and he pointed, and he says 'That's Ashley.'"

The 24-year-old recent college grad, who wants to be a police officer, had been masquerading as the teenage girl.

"The hardest thing for me was trying to dumb-down the language," Johnson says with a smile. "I'm a communications major."

His character was responsible for four of the seven total arrests.

"I just knew how to talk to these guys, I knew what they wanted to hear," Johnson says. "I don't know what that says about me (laughs)."

He says during the year-long project last school year, entrapment was a concern. We shouldn't give away the specific rule on how they get around this, but in essence, the offenders "hang" themselves by being pitifully honest when they type their desires.

"They have to be explicit about what they're after," Johnson adds.

Adam's wife Crissy was also involved. It was a picture of her at age 13 that gave Ashley a face. She says she was proud to be a part of something that might keep a real child out of danger.

And one thing for sure, "We agreed that we're never going to let our kids talk on the Internet unsupervised," Crissy Johnson says. "It's frightening."