she never regained full memory of what had happened but she was able to tell everybody who she had been with that night. reporter: the person cathy had been with that night? sam lopez. when police asked sam about that night, he remembered something very specific. a hickey. on her neck? on her right here. covered up with her bra. you mean way down here on her shoulder? right here. right here. reporter: sam claimed it was no big deal. i didn t want to hit her up, like, tell her: hey, you know, who were you with last night? whatever. reporter: but that night, police records showed sam received two traffic citations, both while driving cathy s car. one was an open container ticket for drinking alcohol in a parking lot. the other for failing to stop at a stop sign. the cop who pulled sam over for not stopping, said sam flew thru the intersection, and when he approached the car, the cop said it looked as if sam and cathy had been arguing. but he did say cathy looked
she never regained full memory of what had happened, but she was able to tell everybody who she had been with that night. reporter: the person cathy had been with that night? sam lopez. when police asked sam about that night, he remembered something very specific. a hickey. on her neck? on her right here. covered up with her bra. you mean way down here on her shoulder? right here. right here. reporter: sam claimed it was no big deal. i didn t want to hit her up, like, tell her, hey, you know, who were you with last night? whatever. reporter: but that night, police records showed sam received two traffic citations, both while driving cathy s car. one was an open container ticket for drinking alcohol in a parking lot. the other for failing to stop at a stop sign. the cop who pulled sam over for not stopping said sam flew through the intersection, and when he approached the car, the cop said it looked as if sam and cathy had been arguing. but he did say cathy looke
sam lopez. when police asked sam about that night, he remembered something very specific. a hickey. on her neck? on her right here. covered up with her bra. you mean way down here on her shoulder? right here. right here. reporter: sam claimed it was no big deal. i didn t want to hit her up, like, tell her, hey, you know, who were you with last night? whatever. reporter: but that night, police records showed sam received two traffic citations, both while driving cathy s car. one was an open container ticket for drinking alcohol in a parking lot. the other for failing to stop at a stop sign. the cop who pulled sam over for not stopping said sam flew through the intersection, and when he approached the car, the cop said it looked as if sam and cathy had been arguing. but he did say cathy looked fine. nobody was quite sure what happened after that, except they apparently parted company. sam in his car, cathy in hers.
he paged me, saying, you know what, i need a ride. reporter: the prosecutor argued that if they were together and javier s dna put him at scene of the crime, then sam had to be there too. his alibi is at theurder scene. and for sam lopez, i think that s just devastating evidence. reporter: and he told the jury it was the first of many instances where the most powerful evidence of guilt came from sam s own words. it s sam s actions and it s sam s statements. reporter: so he gave you the case against him. the best evidence that we have in this case, and that we had, was sam lopez himself. reporter: sam was the one who told police he had a jealous streak. every time she mentions some guy s name, i get pissed off, okay? reporter: cathy was seeing another guy albert. the prosecution said sam s jealousy was triggered the night he took cathy out and saw that hickey. what effect is that going to
disappeared, when she came home impaired and then had her tires slashed. she never regained full memory of what happened. but she was able to tell everybody who she had been with that night. the person cathy had been with that night, sam lopez. when police asked sam about that night, he remembered something very specific. a hickey. on her neck? on her right here. way down here on her shoulder? right here, right here. sam claimed it was no big deal. i didn t want to hit her up. that night police records showed sam received two traffic citations, both while driving cathy s car. one was an open container ticket for drinking alcohol in a parking lot. the other for failing to stop at a stop sign. the cop who pulled sam over for not stopping said sam flew through the intersection. when he approached the car, it