>> what's the cost of a life? well, i'll tell you, it was 150 bucks, u.s., plus 1,000 pesos for transportation, which is next to nothing. >> the information taken off the disk was absolutely critical. it was crucial. it put the nail right in the middle of the coffin. >> when confronted with the information from the disks, sergeant snodgrass pled guilty to soliciting his wife's murder. >> he said it was borne of marital turmoil, but he did not admit to -- and it's a little mercenary to say, oh, i took out $450,000 on my wife and wanted to have her killed and get to live on easy street. he would not sign up for that. >> according to the forensic evidence at joe's request, lucy hired her two uncles and another man to kill julie snodgrass. since joe worked for the office of special investigations, he asked his wife, julie, to help