A 49-year-old man was shot and killed while walking his dog in front of his Texas home. Josh Mankiewicz looks back at a case with an unusual motive.

After a bomb explodes at a day spa in California, killing esthetician Ildiko Krajnyak and injuring two clients, investigators discover Ildiko was the intended target. Josh Mankiewicz reports Friday, ...

An ex-Navy man marries the love of his life. Five months later his new bride finds him dead on their bedroom floor. With no apparent cause of death, family and authorities are left puzzled. His wife ...

"Dateline" is airing a special episode about Patricia Leigh Mills. Here's everything you need to know to watch, live or later on, if you missed it.

Actress Aasha Davis and her sister Lesley move to Hollywood. Life is good until one of them goes missing.  Dateline NBC’s Josh Mankiewicz reports.

In the spring of 1996, Kristin Smart, 19, was a young woman who loved adventure and had her whole life ahead of her. Then, she vanished. For more than two decades, her family and loved ones ...