>> detective david fugate is watching the interview from an adjoining room. he and lead detective mark gilchrist have been working the case since jennifer cave's body has been found headless and handless in colton pitonyak's bathtub eight days earlier. >> do you understand what i want you to do? >> yes, i do. >> think about that. when i come back, you can make a decision. >> absolutely. >> i interpreted that as false caution on his part. i think it was an effort to make laura hall feel like he was looking out for her. >> okay. >> okay what? >> i'll talk to you. >> okay. >> according to laura, she receives an early morning phone call from colton on august 17th, 2005, and accepts an invitation to visit his apartment near the university of texas. >> i saw someone's purse on the floor.