>> okay. >> all right. >> this morning. >> okay, what time did you get up? >> about 7:30. 7:45. >> okay and then what happened then? >> and then we talked and i went back to sleep. when i woke up he wasn't there. >> okay. >> reporter: he'd heard enough. >> i know that's a lie. >> no, it's -- no, it's not. >> do you know why i know it's a lie? >> why do you know it's a lie? >> because i saw you come out of your apartment and get in the passenger seat of that car and i saw him drive out of there. that's why i know it's a lie. >> reporter: cedillo was tough. but carter cervantez wasn't giving an inch. >> coming up -- >> there's an actual human grave that's been dug. >> fresh grave. >> fresh grave. >> when "dateline" continues. cty month with heartgard plus, the #1 choice of dogs. digestive and neurological side effects have rarely been reported. ask your vet for heartgard plus.