Dateline NBC

In this Dateline classic, Kay Mortensen, a brilliant retired professor, a man who was prepared for just about anything finds himself in the most unimaginable situation. Keith Morrison reports. Originally aired on NBC on June 28, 2013.

In this Dateline classic, the scion of the family behind the famous Fontainebleau Hotel on Miami Beach, Ben Novack Jr., grew up with the likes of Frank Sinatra and the Rat Pack. But his murder years later in a New York hotel, launches an investigation that would lead to surprising places and turn his stepdaughter’s life upside down. Dennis Murphy reports. Originally aired on NBC on October 12, 2012.

When Brigida Uto arrives at an emergency room, she is near death. While her vital signs are fading, there are no signs of an infection or injury. Doctors, the FBI and local law enforcement are all called in to not only try to solve a medical mystery, but also a horrendous crime. Natalie Morales reports.

In this Dateline classic, Kevin and Morgan Mengel were happy at first, but when the marriage went bad, he went missing. Police wondered if he simply left, but a family’s relentless pursuit lead to a stunning confrontation and, eventually, the truth. Hoda Kotb reports. Originally aired on NBC December 27, 2013.

A romantic Mediterranean cruise was intended to rekindle the love between Micki Kanesaki and her ex-husband Lonnie Kocontes. But when Micki vanishes, an investigation reveals secret recordings, a surprising star witness, and an undercover hitman. Josh Mankiewicz reports.