In the "Dateline NBC: To Catch a Predator" show, men accused of having explicit online chats with people they think are underage children go to a house to meet them, where TV cameras, host Chris Hansen and police await. Louis William Conradt Jr., of Terrell, Texas, a Dallas suburb, was suspected of being one of those men, except he didn't show up at the house. That didn't stop the TV producers and police from showing up at his, though, and as officers knocked on his door and a camera crew waited in the street, Conradt shot and killed himself. His...