reporter: and it was a hunt the prosecution said. the investigator told the jury he d used cellphone data to track the moorers movements. in the days before the disappearance, they showed up near heather s workplace, some of the bars she liked, even her home. the prosecution suggested the couple was stalking her. then in the early hours of december 18, 2013, with heather s roommate out of town, the prosecutor said the couple struck. it began here. the prosecutor showed the jury surveillance video of sidney walking into a walmart and purchasing a pregnancy test for heather. soon as they leave from walmart, they go and call her. why? cause the test is for her. reporter: the prosecution s theory was that sidney had called heather to come and get the test. take it and then meet up with him later at the landing. they said what she didn t know was that tammy would be there too. there s no doubt sidney is
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the bait in this hunting. he s the bait. reporter: prosecutors admitted they couldn t say what happened to heather at the landing. but they asked the jury to use their common sense. an investigator showed the jury a photo of several items found on the moorers property. there is a spent shotgun shell here, there is a bag of concrete mix here and off to the side up here is some kind of a bottle of a cleaning solution. reporter: the prosecution suggested it was nothing less than a kidnapping kit. what the moorers might have needed to kill heather and dispose of her body. how hard was it for you being in that courtroom every day, hearing these details, having to see tammy? most days when i woke up i didn t want to come to the trial. but i went because when you see your parents hurting, you wish that you could take all their pain away.
power your whole home this holiday with wifi speeds faster than a gig. click, call, or visit a store today. sing 2 reporter: when tammy moorer took the stand in her own defense she sailed through her direct testimony. but then came prosecutor nancy livesay. miss moorer, do you know who i am? i do. okay. and who am i? nancy livesay. you ve made my life miserable. reporter: but nancy livesay was just getting started. the prosecutor s mission? to show the jury that tammy was hardly the tolerant wife she claimed to be. when it came to heather elvis, the prosecutor argued, tammy was angry, vengeful, and tammy s texts to heather proved it. you texted her, you can tell me who you are right now or i will find out another way. that way won t have a great turnout for you.
it was the beginning of 3:00 in the morning. i believe it was 3:10. reporter: for the defense it was a timestamp, proving tammy was home well before heather went missing. that wasn t all, he said. both sidney and tammy s phones were on and pinging from their house, not from the landing, when heather was there. it was all so hard for morgan to listen to. some days she wished she hadn t come to court, but that all changed during a crucial moment in the trial. when i found out that tammy was gonna testify, i really wanted to be there because i do look like heather, and she ran into me in the hallway, and it was the first time she had ever really made eye contact and been up close and personal with me, and i could hear her audibly gasp. reporter: but when tammy took the stand, she seemed confident, ready to tell her story. she told the jury she wasn t a ruthless kidnapper. she was a mom. my youngest is on the far left over there.