reporter: the defense theorized that tate entered the trailer through an unlocked door and shot lisa for revenge. the key defense evidence that suggested an intruder was a stray peanut butter and jelly sandwich in a baggy left on the back deck. there was a sandwich that would not have been there the night before that was there. reporter: critters should have devoured it, he argued. he told the jury it must have the killer s snack. i believe it to be the most compelling piece of evidence in the whole case. reporter: it was now up to a jury to decide, but it wouldn t be easy. coming up in the jury room, deliberations and drama. he started pounding on the door, want saying he wanted out of there, and we were in tears.
why? we didn t get the full confession. maybe that s because seth didn t do it. agent thomas just didn t know. but the women in the caldwell family, without knowing any of seth s admissions about rachel believe with 100% certainty he did not kill lisa. i was never thinking that seth did it. only todd caldwell was no longer a true believe. but the question why seth needed to lawyer u his own investigative instincts kicked in, although he asked his deputies not to tell him anything until they knew something. i would say neither seth nor brian tate were completely liminated as suspects. at that time they were meeting to take stock. they knew they had a husband
he knew the grieving husband on the porch, considered him a friend and knew her too and the victim s father was well known deputy. this is the first time you ve had major crime and also people you know. sdwlilts tough. were you scared? it s okay if you were? definitely was scared. concerned about a lot of different things. didn t know if someone was going to shoot at you? that was possible the whole time. the possibility of a live shooter still on the grounds, marty s adrenalin was pumping. when he entered the trailer a paramedic was tending to lisa. it didn t look good. marty s only thought was to help her but he had to secure his rifle. so, he ran back to the cruiser.
weeks before her murder. mr. tennis, at some point did your relationship with lisa techel become sexual? yes, it did. when we talk about a sexual relationship, we re not talking about texting. are we? no, sir. reporter: you re talking about actual sexual intercourse. yes, sir. reporter: for lisa s father, the revelation that his daughter had a lover was the cruelest blow yet. the first emotion i had was why, why, lisa, you know. and my second thought is, i don t want to tell amy because i know she s not going to be happy. reporter: does it taint your memory at all? really what it did for me more than anything is i have so many more questions that i ll never get the chance to ask her. i mean, i love lisa. and she was a human being. she made mistakes. reporter: the graphic testimony about lisa s affair and how police overlooked it fit perfectly with the defense s theme of a botched investigation and a rush to judgment against seth.
summa magna congressional cum laude. and that is our broadcast for this friday night with our thanks for being with us. on behalf of all of my colleagues at the networks of nbc news, good night. finally get ahold of dad and he s like what s going on? elysse has been shot. i held her hand and said my lisa, my lisa. everyone s like do you want justice? do you want revenge? i just want the truth. lisa techal, newly married, pregnant, starting the career of her dreams. he always put everybody before herself. then one morning a single gun shot blast rocked the newly wed s home. a young husband out of his mind