positive he was responsible for it this. >> he kept insisting he had nothing to do with archie mcfarland's murder and crime lab tests didn't find a speck of blood on his clothes, or him, no scratches on him. was it possible janos wasn't the killer? detective kroenke 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're accusing me. i did not do it. >> if i had a gun, i'd blow your damned 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?