>> according to perverted justice, sierras had a sexual chat with an underage decoy before. now using the screen name, cali guy for you 2005, sierras chatted online for almost a month with a decoy who said she was 13. remember, in his earlier chat, he sent that picture of his penis and talked about making love to a 13-year-old. well, this time he's much more careful about what he says. but perverted justice explains why he is still dangerous. >> he is really definitely trying to gain confidence of the child and make her feel special and important, and in a lot of ways, the log isn't the most graphic but it is very sickening to read when you realize, it is total manipulation of a child. >> all through the chat, the 48-year-old sierras compliments the girl. >> you're the nicest girl i've chatted with in a long time. >> aw, you're sweet. >> he says he wants to buy her flowers, clothes and chocolates. he even sends her a picture of an audio player he bought for her. >> here's the mp player you're