. >> grady judd is the sheriff in poke county, florida. >> whether you stand over a 12-year-old child that's dead jumped from a cement siloh, your heart is broken forever. >> her mother says she was being bullied in school and online. hateful messages and texts tent on popular social sites such as facebook. >> i think the biggest one that stood out to me was drink, bleach and die. go kill yourself. you're ugly. nobody likes you. i hate you. why you are still alive? >> officials at crystal lake ma middle school changed her classes to fwet her way from the bullies. when that didn't work, her mom pulled her out of sixth grade to home-school her instead. she thought she was safe. but for a text savvy child, shutting out the world is not simple. i sent her my cell phone to con tablgt her friends. >> rebecca found her way back online to the students allegedly tormenting her. >> she wanted to see what was gong in her world. and unfortunately in her world there were bully that's were tormenting her literally to her death. >> it wasn't just facebook and instagram, rebecca also had accounts on

. >> meet grady judd, sheriff of polk county. in 40 years as a cop, he has waged battle against violent crimes and human trafficking. it is important for him to know about the place he was born and raised. 50 years ago, this stretch of central florida was a sleepy patch work of cattle ranches and citrus groves. then came a mouse, and with it, theme parks, millions of tourists, rapid development and ultimately the business of sex for sale. >> all of a sudden, we have new dancing establishment. we had massage parlors. how many young deputy during part of this time, and we start fighting against this in this community. because, wait a minute, that's not the wholesome community that we wanted. >> from the outside, this may look like just another roadside oasis for wary travellers. but inside, deputies with the polk county sheriff's office are busy spinning a high-tech web to snare buyers and sellers of sex. >> this is the technology hub of the operation. >> there are cameras that we put in place. >> what it allows us to do is see the