it was warm in fort collins, a college town, remember.d around favorite watering holes. plenty of young women, carefree, drinking, celebrating a weekend, unaware. but, worried. this time, the police were watching, because they were very worried. >> we have the surveillance set up over the weekend. we were not going to let him out of our sights. so, we had teams, that were rotating, while we waited. we can actually make an arrest. >> all weekend, surveillance teams followed him, as he cruised the nightclub district. >> he had a bottle of whisky he was carrying around him all night. he didn't go into any bars. he just walked around. >> he was trolling? >> yes, trolling. that's a good way to put it >> late at night, the undercover cop spotted travis following a young woman, walking, home alone. so, without revealing the surveillance tape, one of the cops approached him, and asked a question or two. travis gave a fake name, calling himself travis kennedy. the officer let him go. but, travis did not go home. and, before long, began to follow a