Like moths to the flame, they just keep coming. It's been more than two years now since we first began our series of reports investigating online sex predators. Five different states... 129 men exposed. On Dateline Wednesday, investigation number six. This time, we've set up our hidden cameras in a rented house in rural Georgia. And once again, even men who've seen our reports show up at the door. We should let you know, some of what you'll see and read below is explicit. This report first aired on NBC, Sept. 13.

In community after community, vulnerable young teenagers are still at risk from grown men online. On Sept. 22, Friday, our hidden cameras are in Georgia. This time among the suspected predators caught on tape are three military men — two served in Iraq. Now they could be serving time in prison. Again, we want to warn you, some of what you'll see is explicit.

Dateline is in the town of Petaluma, Calif. where two high-profile predator cases made national headlines. What would our hidden cameras find there? Again, we want to warn you that some of what you’re about to see is explicit. This report aired Friday, Sept. 29, and repeats Nov. 11, Saturday.

In a court of Law, DNA evidence is a slam dunk proof of guilt. But not in this case involving identical twin brothers.

It's what prompted our entire series of predator investigations: Grown men sending graphic e-mails to young teenagers. And now, it's what has forced a powerful congressman out of office in the scandal that's consuming Washington. Representative Mark Foley of Florida is accused of having sexually explicit online chats with underage teens. Dateline's latest investigation also uncovers some prominent men caught in what police say are criminal acts. They, too, risk losing their jobs... and in some cases, perhaps even their freedom. Again, we want to warn you that some of what you’re about to see is explicit. This report airs Friday, Oct. 6.

Loved by many, attractive, bright and kind -- Mary Lynn Witherspoon lived a sweet, southern life anybody could envy -- until a young man obsessed by her decided to take it away

A preacher and a husband involved in bigamy says his wife ran away

Someone, we don't know who, posted an online warning that Dateline's hidden cameras are in the neighborhood. But think that stopped these men? We want to warn you that some of what you’re about to read is explicit. This report aired Tuesday, Jan. 30.

We're back in Long Beach, California, where the long arm of the law has reached out and grabbed more than 3 dozen men in just 3 days. And perhaps the most surprising arrest in our most recent investigation? It didn't happen overnight in our undercover house — it happened in broad daylight, in a public park. We want to warn you that some of what you’re about to see is explicit. This report aired Tuesday, Feb. 6.

More predators caught in Dateline’s phenomenal sting operation.

This report airs Tuesday, Feb. 20 on NBC.

Dateline's cameras are on the beach, and suspected predators are online. We want to warn you that some of what you’re about to see is explicit. This report airs Tuesday, Feb. 27 on NBC.

We’re on the hunt for a new kind of predator: Wendy, the apparent mastermind of an international identity theft ring. So far, the search had taking us taken us clear across the country and it’s about to take us around the world as we track down the crooks who steal your credit card and banking information to go on shopping sprees with your money.

Dateline continues its investigation in Florida, where over the course of our four-day investigation, 21 suspected predators showed up at Dateline's undercover house on the beach. We want to warn you that some of what you’re about to see is explicit. This report airs Tuesday, March 6 on NBC.

Tonight we follow Chris Hansen behind the scenes of this remarkably popular series. Whether you love it or hate it, it's hard to look away. The personal accounts and some very memorable confrontations are equally riveting in this episode.

Chris Hansen embarks on a new series of investigations that takes him into real danger as he exposes internet cons via emails preying on people believing in promises of money from foreign sources.

Dateline's Chris Hansen goes on an undercover investigation that starts at a computer keyboard and travels across America and the Atlantic. Using bait credit cards and a fake online store, can we lure criminals out of the Internet's underground?

This has to make you wonder if Dateline is the only way anyone is caught doing anything. Tonight, undercover cameras in Houston, Texas and reporter Victoria Corderi not only document the car thefts, but follow the car.

Three separate shootings in Albuquerque, N.M. left five dead. Why wasn't a mentally ill man stopped before he started his brutal rampage?

A rare look at the frightening power of a charismatic killer, just 18 years old -- a teenage mastermind who convinces other kids to kill. Would even a hardened reporter covering his story get caught up in the spell?

A young newlywed falls to her death from a 1,000 foot cliff. Did she fall accidentally?

A preacher and his wife looked like they had a marriage mage in heaven - until a body was found in the parsonage.

A Day At The Beach The fascinating Chris Hansen Dateline undercover sting series continues with new episodes. Tonight, in a multimillion dollar home on a beach in New Jersey, predators are still pursuing underage children and Perverted Justice volunteers are still pursuing them.

It's our twelfth "To Catch A Predator" investigation and this time we're set up in a 6,000- square foot home in Bowling Green, Kentucky. It's a town of about 50,000 people an hour north of Nashville, Tennessee. Each one of these investigations has its own rhythm and Kentucky is no different. Within hours I am struck by the fact that fewer men are showing up at our hidden camera house than in past investigations. Looking back I think this at least partially because the Kentucky Attorney General's office and the Kentucky Bureau of Investigation, along with local law enforcement, have been actively pursuing online predators in the past year. Before Dateline's investigation in Bowling Green, the Attorney General's office with the help of the online watchdog group Perverted Justice had conducted two previous sting operations without us, making 20 arrests. One of them was a 59-year old criminal justice instructor at an Ohio college who used to be an elementary school teacher. He had been chatting online about having sex with a decoy posing as a13-year-old girl before showing up to meet her at the undercover house. Even after this earlier high-profile case, though, we still saw men in our investigation eager to meet a young teen home alone for sex. As you will see, seven men show up over three and a half days and all seven are arrested after I talk to them and they leave the house. You'll see in Kentucky that we employ the same online decoy, Casey, who we used in New Jersey. She is just as effective in this latest investigation as she was before talking to the men in person. You'll see the grooming process in real time. Also in Kentucky we see a range of men show up, from a factory worker to a man who says he's a police detective and carries a gun. Watch the heart-pounding moments when, as he leaves our hidden camera house, he refuses to follow orders from the arresting officers.