bridesmaids when their aunt val remarried. but there are too many from this family in the circle village cemetery. something, not something a family gets used to. they just learn to work around it. they go on. >> we're not victims. we're survivors. survivors keep on living life. and we're survivors. and we're survivors. i'm craig melvin. >> and i'm natalie morales. >> and this is "dateline." for lovely robin, the late shift was her last. >> she was laying facedown, a pool of blood under one side. >> just one tiny clue -- >> a piece of curved foam rubber. >> there was a suspect, but he had an alibi, until this revelation. >> i said, i have something that you need to know. ♪♪