Please select another video.
SNEAK PEEK: While He Was Sleeping
When a successful luxury car dealer is murdered in his sleep, detectives soon focus in on one of the victim's lovers. But with little hard evidence to go on, the investigation stalls - until a year later, when one lucky clue breaks the case wide open.
Watch full episodes of Dateline NBC, for new episodes visit NBC.com
Dig deeper into the issues and stories behind the broadcast.
Watch extended interviews, interrogation clips, and other exclusive web content that didn’t make the Dateline broadcast.
Someone is missing. Have you seen something that can help? Read it. Share it.
Do you have a missing person’s case you’d like Dateline to feature? Contact us here.
Could you be the one to heat up a cold case? Read it. Share it. Someone out there knows what happened.
Do you have a cold case you’d like Dateline to feature? Contact us here.
Dig into the issues and powerful, in-depth reporting with exclusive digital content from the reporters and producers who go “On Assignment.”