. >> mark moffet was that attorney.ted what had become the scene of the crime. >> we went to the house. and we walked in, and we think, ah-ha. >> within moments of being in that home, we knew immediately there was a huge problem. >> not a problem for them, more for the people who had put conrad truman away. >> coming up. is an innocent man in jail for someone's mistaken math? >> i remember thinking, well that's strange. that couldn't be right. >> we immediately started measuring. we knew right away that there was a big problem. >> when "dateline" continues. lm rsv in people 60 years and older. rsv can be serious for those over 60, including those with asthma, diabetes, copd and certain other conditions. but i'm protected. arexvy is proven to be over 82% effective in preventing lower respiratory disease from rsv and over 94% effective in those with these health conditions. (♪♪) arexvy does not protect everyone and is not for those with severe allergic reactions to its ingredients. those with weakened immune systems may h