i believe they willfully lied to secure a conviction against conrad truman. >> and for these attorneysthe state's case. one had to do with gun shot residue tests. the defense learned police swabbed both heidy and conrad's hands, but those swabs were never sent to the lab. >> when you have gun shot residue that was never tested, those things matter. >> the defense team decided to test those swabs themselves. conrad's hands were negative for residue, but there was a question as to whether conrad washed his hands before they were tested. so those results were meaningless. >> as for heidy's swabs on her right hand, and significantly heidy was right-handed. >> when you have gun shot residue in a location and in a quantity that is absolutely consistent with her firing a semi-automatic weapon, one of the possibilities is that she fired a gun. you can't discount that. >> the deeper moffet got into the case, the more it seemed to them heidy's wound was self- inflicted. they believe the head wound, a contact wound, ruled out homicide. >> a contact gun shot wound to the right temple are the most

the very thing that freed him, reasonable doubt, could also shadow conrad truman for the rest of his life. >> that's all for this edition of "dateline," i'm andrea canning, thanks for watching. it was another very fast-moving newsweek. here are some of the conversations you might have missed. >> i yowound up teaching social studies, and coaching football at mankato west high school. go starlets. we ran-- we ran a 44 defense, we played through to the whistle on every single play, and we even won a state championship. never closed the yearbook, people. but it was those players, and my students, who inspired me to run for congress. they saw in me what i had hoped to instill in them, a commitment to the common good. an understanding that we are all in this together. and the belief that a single person can make a real difference for their neighbors. so there i was, a fortysomething high school teacher, with little kids, zero political experience, and no money, running in a deep red district. but you know what? never underestimate a public school teacher. now i represented my neighbors in