them. >> we set them up. as we began driving on the freeway, we knew where we'd pick them up, different cars, different on-ramps. >> this is where they drove. through an indian reservation, up a dirt track to the top of a rocky hill. she's in there somewhere, he told them. this is 20 miles from where she disappeared. >> did you have any idea where you were going or get a sense of -- >> no, but if you notice this cliff, goes off the cliff here. to get the bearings, to remember -- >> she'd go out. >> i would grab him and go, if he goes off this cliff, no one is going to believe me he accidentally went off this cliff. >> he looked around, seemed confused. >> he came up, went right here to the edge, and he says, right there. right about here. he's not exactly certain. then he takes a few steps this way, changes his mind. >> what were you thinking as you're looking down at this?