but without trials, the mothers were left without a verdict, one way or the other, in the deaths of all of the children. camille bell. >> even if it takes 30 trials, i don't care. you know, prove it. >> the prosecutor's answer, it would serve no purpose. >> you can only serve one life sentence. just ahead -- a new alibi that backfires. >> he was out that night, no question in my mind. he was not at home. he was out and about. >> and after all these years, new dna evidence. >> it probably would exclude 98% or so of the people in the world. [ male announcer ] frequent heartburn? the choice is yours.