one of your top factors in reviewing a case. it's very significant, very important. they make the case. >> with no leads, no evidence and no suspects, the trail of julie estes' killer turned cold. julie's family started to believe her murder would never be solved. >> after a couple of years, we just gave up. i said, well, we're up here and they're down there. nobody cares. >> the case always bugged me. she went missing on my watch, and it bugged me. i mean, every time i drove by that store, i thought of her. >> after a few years, patrolman frank mackesy was promoted to chief of detectives with the power to recommend cases to the cold case unit. >> mackesy always had a strong desire to solve this case. this is a case that stuck with