reporter: and that s when she found a special group of new friends. women like her who joined this high-powered dance exercise class each week to improve their physiques and their lives. cari cooper was heather s dance instructor. when you leave your job, you leave that stress behind, you come here and it s like the happy hour. reporter: everyone in heather s life noticed that happy hour was doing wonders for her. i d say, heather, turn around. i said, you ve gotten smaller. and she s like, yeah! were the pounds just melting off of her in front of your very eyes? melting off. melting off. reporter: it was nothing short of a total transformation. in 18 short months, she went from this to this. i remember that she brought a picture of a before and then where she was now and was so proud. and she was like, look what i ve done. she was so proud of herself. reporter: no one was surprised when heather soon landed her dream job, teaching at an elementary school in
confidence. she saw a different life for herself. she immediately started working on her weight. reporter: and that s when she found a special group of new friends. women like her who joined this high-powered dance exercise class each week to improve their physiques and their lives. cari cooper was heather s dance instructor. when you leave your job, you leave that stress behind, you come here and it s like the happy hour. reporter: everyone in heather s life noticed that happy hour was doing wonders for her. i d say, heather, turn around. i said, you ve gotten smaller. and she s like, yeah! were the pounds just melting off of her in front of your very eyes? melting off. melting off. reporter: it was nothing short of a total transformation. in 18 short months, she went from this to this. i remember that she brought a picture of a before and then where she was now and was so proud. and she was like, look what i ve done. she was so proud of herself. reporter:
brighter and lighter future. she had so much more confidence. she saw a different life for herself. she immediately started working on her weight. reporter: and that s when she found a special group of new friends. women like her who joined this high-powered dance exercise class each week to improve their physiques and their lives. cari cooper was heather s dance instructor. when you leave your job, you leave that stress behind, you come here and it s like the happy hour. reporter: everyone in heather s life noticed that happy hour was doing wonders for her. i d say, heather, turn around. i said, you ve gotten smaller. and she s like, yeah! were the pounds just melting off of her in front of your very eyes? melting off. melting off. reporter: it was nothing short of a total transformation. in 18 short months, she went from this to this. i remember that she brought a picture of a before and then where she was now and was so proud. and she was like, look what i
memphis. fellow teacher jesika moxley was in awe of the amount of energy miss jones poured into her classroom. heather loved being a kindergarten teacher, from the moment that they set foot into the door, to the moment that they left, they were dancing, they were singing, they were playing. reporter: by april 2013, it was all coming together for heather jones. on a saturday night, she hit that rhumba room dance floor to try out some moves she d picked up at the gym and to show the world what she d become. it was just so much fun. we were probably there for about three hours just dancing. reporter: three days later on tuesday morning, teacher jesika moxley headed to school, expecting to see her energetic co-worker, heather, already there. our school day didn t start until 8:00 or 8:30 that year and she was here every morning by 6:30, 6:45.
eye on chris. they secretly attached a gps device to his car to track his movements. we wanted to know possibly if he could take us to where heather was at. reporter: they also asked chris to come in for a second interview. detective bryan wallace would lead the interrogation. are you thinking this could potentially be our last chance to to solve this? certainly. this was our shot. reporter: detectives watched as chris car made his way towards the police station, but then it stopped a quarter-mile away at a nearby mall. police thought he might be running an errand, but moments later, he popped up at the station. why had he parked so far away? chris was escorted in. hey how are you doing? thanks for coming out. hey, my pleasure. anything i can do. reporter: chris told detectives he went to heather s house the night she disappeared to talk. but before he could say much to her, he said her phone rang.