A mother vanishes after a Halloween party and years later new clues turn the town upside down in a new episode of "Dateline." ...

A private investigator uncovers clues in a decade-old case about a mother of four who vanished, turning a town upside down.

Friday's new episode of "Dateline" will look at the latest developments and new interviews of the high-profile murder trial ...

Dateline NBC episode Deadly Omission reportedly explores the gruesome murders of Kasi Peek in 2005 and Carol Marlin and ...

Friends say Karen Swift wasn't having a good time at a country club Halloween party in Dyersburg, Tennessee. The next morning ...

The upcoming episode of NBC's famed true crime show, Dateline, is all set to cover ... "A woman's murder shines a light on an unsolved mystery from years earlier. As the connection between the ...

“A woman's murder shines a light on an unsolved mystery from years earlier," a synopsis ... friends — and be absolutely diabolical at the same time,” Dateline correspondent Andrea Canning told NBC ...

Dateline episode After The Halloween Party revolves around the mysterious disappearance of 44-year-old Karen Swift on the night of October 30, 2011.

New tips have trickled in, including one that was called into police after the person spotted a Dateline NBC story about the ...

A woman's murder shines a light on an unsolved mystery from years earlier. As the connection between the two cases becomes clear, a long-hidden truth surfaces. Andrea Canning reports Friday ...