For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

Once upon a time, a mermaid princess named Lara fell in love with a human prince. To be with him, she used a witch's potion to become human—but the magic came at a cost: If she failed to find true love, she would vanish into sea foam forever. Now, 200 years later, Lara awakens in Lake Biwa with one final chance at life and love.

A determined FBI agent delves into a female killer's history while partnering with a seasoned investigator to track her down.

For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

Highlights, interviews and analysis from expert pundits of Saturday's English Premier League football matches.

For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

Cameras ride along with Troopers as they keep the streets safe and hunters honest while at the same time taking advantage of the breathtaking landscape that Alaska State Troopers are lucky enough to call "their office."

Cameras ride along with Troopers as they keep the streets safe and hunters honest while at the same time taking advantage of the breathtaking landscape that Alaska State Troopers are lucky enough to call "their office."

Recent lottery winners look for their perfect dream house in this "House Hunters"-inspired reality show.