When nursing student Michelle Le disappears from a San Francisco Bay Area parking garage in broad daylight, her friends soon start getting strange texts from her phone. Keith Morrison reports.

Keith Morrison on the final chapter of Cal Harris's journey through the courts in upstate New York. Dennis Murphy interviews Dalia Dippolito whose second trial took a stunning twist in Florida.

When a woman is found dead in her garage, detectives in Frisco, Texas uncover a series of suspects – all of them connected in different ways to her secretive life. Josh Mankiewicz reports.

When the 19-year old wife of a Marine vanishes without a trace in the California desert, investigators launch a search. They soon uncover a mystery with multiple suspects. Andrea Canning reports.

In an two-hour Dateline, Andrea Canning tells the story of a woman who falls to her death while hiking with her husband in a National Park. Rangers question if her death was an accident.

Keith Morrison reports on a case with many twists and turns. In June 2015, Russell Faria’s conviction for the murder of his wife was overturned. Then, the story went in a stunning new direction.