reporter: but they didn t meet chandy in there. they met her husband, his name was john. john creech. not pleasant. when they came out, they were both crying. reporter: they told their mom creech threatened to kill gavin if he didn t stay away from chandy. though 17 months later he vanishes after calling chandy, lisa had a very bad feeling. everything changed right then for me. reporter: detectives were suspicious, too, remember, chandy told them she didn t see gavin that night. but there was evidence to the contrary. cell phone records showed gavin s phone and chandy s were in the same place that night. a little triangulation narrowed down just where in. we came down this street and this was the likely spot. reporter: a likely spot for a tryst, that is? parking lot would be empty at night. . yes, yes. so this is a pretty lonely
can be is all i can say about that. reporter: but if gavin was dead, and certainly it looked that way, where was his body? how did his car wind up in the storage locker? and above all, who would have wanted him dead? reina lim certainly seemed an unlikely suspect. she told them she had rented the storage unit for someone else. meanwhile, detectives looked further into chandy s affair with gavin and discovered the two had met in rehab and in december 2010, less than two years before gavin disappeared. lisa found out about it. i was heartbroken. reporter: so she took an extreme step to save her family. she and two of her sons, then 14 and 20, went to the creech s house to speak to them, family to family. and i was really upset when we were driving there. so i stayed in the car, and i let my sons go in the house. reporter: but they didn t
reporter: but they didn t meet chandy in there. they met her husband. his name was john, john creech. not pleasant. when they came out, they were both crying. reporter: they told their mom creech threatened to kill gavin if he didn t stay away from chandy. so 17 months later, he vanishes after calling chandy? lisa had a very bad feeling. everything changed right then for me. reporter: detectives were suspicious too. remember, chandy told them she didn t see gavin that night. but there was evidence to the contrary. cell phone records showed gavin s phone and chandy s were in the same place that night. a little triangulation narrowed down just where. we came upon this street here, and we thought this was a good spot. this was a likely spot. yeah. reporter: a likely spot for a tryst, that is. parking lot though would be empty at night? yes. yes. and so this is a pretty lonely spot. it is.