Mugshots: 50 men were arrested after the latest installment of the "Dateline" report .... We want to warn you some of what you'll read is explicit. parents need to know what their kids can confront when they sit down at the computer. SOUTHERN CALIFORNIA - A month ago, Dateline launched its third investigation into a growing national epidemic—grown men trolling the Internet, many looking for sex with children. This time, to expose them, we set up multiple hidden cameras in a house in Southern California. A decoy coaxes the men in, but instead of finding a 12- or 13-year-old home...