>> yes, yes, you have to improvise. >> and that's what san saba deputy john wilkerson did when carl pressleye chief suspect in the disappearance of bonnie harkey and the death of her caretaker, came in for questioning. wilkerson used the video recorder embedded in his car. >> we're ready. is he recording? >> and that's your interrogation? >> and that's my interrogation right there in the sally port. my name's john wilkerson, and i'm sheriff's office here. this is mr. -- chief deputy bill price, okay? >> he was not under arrest, but carl pressley wore prison stripes for his interview because investigators had taken his clothes so they could run tests on them. >> i'm not making any accusations at this point. i'm just tryin' to -- to get him locked down in -- into his original story. >> from the beginning, carl pressley admitted he and his girlfriend, lillian king, had gone out to his grandmother's house for a visit that sunday. >> do you remember how long you stayed there? >> no sir, i really don't. >> he started -- durin' the interview, he started to -- you know, try to pretend like he couldn