cynthia mcclelland had always tried to play matchmaker. >> cynthia pretty much told me that was goingine how happy your mom would be -- >> oh, god. >> -- if she's looking down, that you two are together. >> i can't-- i can't even imagine. she would be just doing some sort of weird dance that "i told you so." and you know, i'm sure she's thrilled. we got married on her birthday, so that would have made her ecstatic. this is "dateline." >> my mother called and said michelle is dead, how is it possible what happened? >> a young mother found brutally murdered, her little girl left to wander in her mother's blood. police had a suspect, and they say, he had a motive. >> we had an intimate relationship. inad h >> ended up having sex. >> could they prove he was the killer? >> it was a circumstantial casel >> except for that witness, the girl who left thosfo