1999 when babcock was working the vice unit in albuquerque. >> i was actually watching -- a particular prostitute. see a vehicle pick this girl up, drive to a remote location. we approached the vehicle, opened the door, first words out of this girl's mouth, who's a known prostitute, was that he was trying to kill her. >> and the man in the car was? >> lorenzo montoya. >> lorenzo montoya, a short powerfully built man in his 30s, known to have an equally short temper and a taste for prostitutes. >> babcock said he saw marks on the woman's throat and that she told him montoya looked like he was enjoying it. >> did you believe her story? >> yes. >> so he was arrested for charges beyond just patronizing a prostitute. >> yes, he was. >> that assault charge against lorenzo montoya went nowhere because the victim later refused to testify. but it was what had happened next that really focused the