>> daniel clay. >> reporter: had you ever heard of daniel clay before? >> never.d never -- >> his name. >> reporter: come up at all? >> not in this case. >> reporter: who is daniel clay? lives in monroe county and doesn't really have a permanent address. he just kind of flops around from house to house, girlfriend to girlfriend. he has a few -- a few kids. but he just kinda does his own thing. >> reporter: someone that's not doing very well in life? >> unemployed. >> reporter: oh, boy. >> and we had found out that he had actually been arrested a month or two prior, i believe it was in may of 2016, by the monroe city police, for a larceny from person, where he stole a -- a backpack with some tattoo equipment off of somebody. >> reporter: a petty crime, essentially. >> but it's a felony. >> reporter: and unfortunately for daniel clay, the law in michigan had recently changed. under the old law, only dna from convicted felons was entered into the national data-base: codis. the new law included the dna of anyone arrested for a felony. >> so, upon his arrest, with the