prosecutors showed security video of cara and brianna shopping and argued it was part of the cover-up. she leaves the house around 3:00 p.m., according to her, but she doesn t pop up on surveillance video until 5:00 p.m. that evening at the holyoke mall. suddenly starts using her debit card left and right to make miniscule little purchases. reporter: what was going on, do you think? she was trying to be seen. she was trying to be elsewhere. in short, she was creating a digital alibi for herself. we are still driving. love you. bye. reporter: an audio alibi, too. prosecutors played voicemails. all play-acting, they said. on our way to burger king. call. please, please, please. the whole reason she s out is to try to let her get some sleep. that just didn t add up. reporter: and now, a pretty big deal. these cleaning rags. can you just hold that up for the jury to see? reporter: prosecutors said cara used them to mop up. one contained a woman s dna. which the prosec
annamarie that day, is that correct? no, i didn t. reporter: the timing of that last call was important, prosecutors argued, because they theorized cara murdered her wife soon after, then spent hours cleaning and covering up. remember that afternoon of errands? prosecutors showed security video of cara and brianna shopping and argued it was part of the cover-up. she leaves the house around 3:00 p.m., according to her, but she doesn t pop up on surveillance video until 5:00 p.m. that evening at the holyoke mall. suddenly starts using her debit card left and right to make miniscule little purchases. reporter: what was going on, do you think? she was trying to be seen. she was trying to be elsewhere. in short, she was creating a digital alibi for herself. we are still driving. love you. bye. reporter: an audio alibi, too. prosecutors played voicemails. all play-acting, they said. on our way to burger king. call. please, please, please. the whole reason she s out is to
remember that afternoon of errands? prosecutors showed security video of cara and brianna shopping and argued it was part of the cover-up. she leaves the house around 3:00 p.m., according to her, but she doesn t pop up on surveillance video until 5:00 p.m. that evening at the holyoke mall. suddenly starts using her debit card left and right to make miniscule little purchases. reporter: what was going on, do you think? she was trying to be seen. she was trying to be elsewhere. in short, she was creating a digital alibi for herself. we are still driving. love you. bye. reporter: an audio alibi, too. prosecutors played voicemails. all play-acting, they said. on our way to burger king. call me, please, please. the whole reason she s out is to try to let her get some sleep. that just didn t add up. reporter: and now, a pretty big deal. these cleaning rags. can you just hold that up for the jury to see? reporter: prosecutors said cara used them to mop up. one contained