Neither death made any sense. Young women -- both in the prime of their lives -- one about to start a new career, the other with two children she adored.

The two women had never met... and their apparent suicides were years apart, but, as you'll see, they were linked -- in life, in love, and in death.

Rob Stafford has the story of 'Death and the Dentist.' Here's a blog entry, a preview from Rob:

"Jennifer was found by one of her young sons in their upscale home in suburban Atlanta. She was lying in bed with a single gunshot wound in her head. The gun — and divorce papers — were on the bed beside her. Police thought it was a possible suicide. But when we spoke with the Barbers, Jennifer’s father and two sisters, just a few weeks after she died, they wanted to tell the world that Jennifer did not take her life. It was something she would never have done, even if she were unhappily married and facing an ugly divorce and custody battle. They were positive she had been murdered and thought they knew the killer. This is a compelling mystery, but ultimately this is a story of a family fighting for justice for the person they loved." Click here to read more.

Also Saturday: Tara Conner
She is perhaps the best-known Miss U.S.A. we've seen in a very long time. And for all the wrong reasons. Tara Conner, the reigning Miss USA, recently emerged from a month in rehab after reports of hard-partying unbecoming to a beauty queen.

In her first interview since getting out, Conner hints at a troubled past, admits drug use, and reveals what she thinks of the war of words she triggered between Donald Trump and Rosie O'Donnell.

Matt's Lauer's exclusive interview with Tara Conner on Dateline Saturday, at 8 p.m./ 7 central on NBC.