kronke was confident he could wrap this up quickly. >> we had the wet clothes.e was changing his statements. his girlfriend, our victim's wife, was very positive he was the one responsible for this. >> kronke grilled him for hours. but janos was insistent he had nothing to do with archie mcfarland's murder. crime lab tests didn't find a speck on his clothes. nor was there a trace on him or scratches either. with no history of committing any kind of crime, was it possible janos wasn't the killer? the detective had an idea. mary ann wanted to see her former lover in jail. what if they taped the conversation? so the two met for the first time since archie's murder as the tape rolled. >> how could you do such a horrible thing and think you're a man? if you get out of here alive, i'll kill you. do you know what you've done? you've destroyed me. >> i didn't do what you accusing me. i did not do it. >> if i had a gun, i would blow your damn brains out right now. >> at one point mary ann became so enraged she even spat on him. >> love? you did this in the name of love?