Tonight's episode of Dateline on NBC features an investigation into the business of Bronx hip-hop legend Tim Dog, who is being accused to scamming by several women. As you'll see in the above two-minute preview, they say that Dog talked them into partnering with him before he would suddenly back out of the proposal. They even go undercover with one of the women to expose him and "his lies." The full episode airs tonight at 9 p.m. EST.