That camera app, so useful. well, we learned that they had conducted surveillance at ashlea s apartment weeks before that. they had a picture of her apartment. her actual door to her apartment, and they had pictures of her vehicle, the white dodge ram pickup. reporter: in early december, 2014, carter cervantez and david mallory were arrested and charged with the murder of ashlea harris. cold comfort for ashlea s sister. it s just such a loss and it s so pointless. i just don t understand how people could do that. reporter: they were tried separately, but the cases against them were virtually identical. assistant d.a. kevin rousseau led the prosecution. on state s exhibit 1
on state s exhibit 1 reporter: ashleadeenor assisted. from the witness stand detective cedillo helped lay out the case. were you able to conduct a search of her apartment and her vehicle, things like that? yes, sir. and did you find a receipt that proved to be helpful? that s correct. reporter: a sales receipt showed some odd purchases on carter s credit card. she had purchased two shovels. she had purchased a tarp. she had purchased gloves. reporter: why was that significant? because of a discovery way out in the texas scrub. a discovery worthy of a horror movie. and the key to finding it was right there on carter and david s cell phones. they would text each other longitude and latitude coordinates, and it led us to a remote area near abilene. reporter: what was there? as soon as we got to where the spot says, you re there, we look up and there s an actual human grave that s been dug. reporter: fresh grave? fresh grave.
well, we learned that they had conducted surveillance at ashlea s apartment weeks before that. they had a picture of her apartment. her actual door to her apartment, and they had pictures of her vehicle, the white dodge ram pickup. reporter: in early december, 2014, carter cervantez and david mallory were arrested and charged with the murder of ashlea harris. cold comfort for ashlea s sister. it s just such a loss and it s so pointless. i just don t understand how people could do that. reporter: they were tried separately, but the cases against them were virtually identical. assistant d.a. kevin rousseau led the prosecution. on state s exhibit 1 reporter: ashley deenor assisted. from the witness stand detective cedillo helped lay out the case. were you able to conduct a
Mallory were arrested and charged with the murder of ashlea harris. cold comfort for ashlea s sister. it s just such a loss and it s so pointless. i just don t understand how people could do that. reporter: they were tried separately, but the cases against them were virtually identical. assistant d.a. kevin rousseau led the prosecution. on state s exhibit 1 reporter: ashleadeenor assisted. from the witness stand detective cedillo helped lay out the case. were you able to conduct a search of her apartment and her vehicle, things like that? yes, sir. and did you find a receipt that proved to be helpful? that s correct. reporter: a sales receipt showed some odd purchases on carter s credit card. she had purchased two shovels. she had purchased a tarp. she had purchased gloves.
well, we learned that they had conducted surveillance at ashlea s apartment weeks before that. they had a picture of her apartment. her actual door to her apartment, and they had pictures of her vehicle, the white dodge ram pickup. reporter: in early december, 2014, carter cervantez and david mallory were arrested and charged with the murder of ashlea harris. cold comfort for ashlea s sister. it s just such a loss and it s so pointless. i just don t understand how people could do that. reporter: they were tried separately, but the cases against them were virtually identical. assistant d.a. kevin rousseau led the prosecution. on state s exhibit 1 reporter: ashleadeenor assisted. from the witness stand detective cedillo helped lay out the case. were you able to conduct a