his name was john, john creech. >> when i came out, they were both crying. >> they told their mom thatreatened to kill gavin and 17 months later he vanishes after calling her. lisa had a very bad feeling. >> everything change rather than for me. >> detectives were suspicious too. remember, she told them she did see gavin that night, but there was evidence to the contrary. cell phone record shows gavin's and hers were in the same place that night. a little triangulation narrow down just where. >> game on the street your and thought, this is a likely spot. >> a likely spot for a twist, that is. >> the parking lot would be empty at night. >> this is a pretty lonely spot. >> it is. >> it seemed that on the night he disappeared, gavin smith met her for sex or comfort or just a talk, something. quite a lot to learn from those phone records, but there was more. a third phone, john creech's phone in the same spot on the same night and this was eerie. creech's phone seemed to be moving in sync with gavin's. >> john and gavin's phone parallel to each other. >> together? >> together. sometimes hi