Dateline: Mystery

When Toni and Bob Heartsong met each other, it was love at first sight. So why was Bob being accused of Toni’s brutal murder? Were these two free spirits not soul mates after all?

On a remote canyon road, a minor misunderstanding between next-door neighbors escalated into a series of bitter disputes. Soon, a peaceful community is shattered by a deadly altercation between the feuding neighbors. A chilling 911 tape may help explain if it was self-defense or a vendetta.

A popular, well-connected businessman dies when his car explodes. Initially, speculation leads to the mob, but a big insurance payoff eventually sends this cold case to Europe, where one ex-wife resides. Josh Mankiewicz reports.

Alex and Derek King captured national media attention in 2003 when they confessed to killing their father. The boys, 12 and 13 years old at the time, were two of the youngest children ever to be charged with murder and arson as adults. Now, Keith Morrison has the first interviews Alex and Derek King have ever given. They speak about the baffling crime and their lives today.

Her name was Christie, and she was just 25 when she was murdered. The case soon grew cold. There were few clues at the crime scene, except for a burnt cigarette. Could it have belonged to the killer?

This is a harrowing, dramatic story of heroism at sea after a cruise ship starts to take on water and sink with nearly 600 people on board. Remarkably, the rescue was not led by the captain or senior officers but the ship's cruise director and her entertainment staff -- including a magician and a guitarist. Almost every moment of the crisis was captured on home video, including some heart-stopping scenes of passengers jumping off the ship and others being airlifted off the deck not long before the entire ship goes under. How did the passengers survive after some crew members abandoned ship?