he loved singing really loud. reporter: dakota killburn was just 23 years old when a dose of heroin claimed his life. he says until you do it, you ll never understand. it gets you, holds onto you, and all you want to do is want it. reporter: the young man was found unresponsive in his parents home on november 8, 2015. he just enjoyed life til things happened. reporter: police followed the clues to neighboring new hampshire where two men were charged under a statute that aims to hold these who sell buttings with a, quote, death resulting drugs with a, quote, death resulting. 25-year-old francis mailly, a childhood friend, wuss sentenced to a was sentenced to a year in prison. they are literally selling poison, killing people with that poison. and for them, they need to face a punishment. reporter: the previously little-used charge carries up to life in prison. it s being used more in new