The unanswered questions consume us...

Pauline Picard’s family thought their missing daughter had come back home—then a body was discovered.

It was a murder scene that could appall the most hardened homicide detective...

Prepare to get the chills all over again.

The crime was considered too brutal and gruesome to be reported on daytime TV...

These eerie demises were far from glamorous.

At least 45 deaths of young men are attributed to the Smiley Face Killer, but most police departments say he doesn’t exist.

On a cold January morning, John Hoskins slaughtered three members of his family.

Barbara Forrest and Mary Ashford lived in different centuries, but they died in chillingly similar ways.

We know the details of their deaths, but we don’t know their names—or the names of their killers.

These mysteries will make you believe in the impossible.

These cases haunt us still.

He checked in as Roland T. Owen. It wasn’t his real name, and that was just the beginning of the mystery.

The mysterious death of Norway's Isdal Woman continues to transfix investigators across the globe.

These chilling unsolved mysteries will give you the creeps.

Sleep tight.

Despite a conviction, the young girl's murder remains a mystery.

What happened to Maura on that cold night in New Hampshire?

The cases that haunt us...

For more than two decades, Massachusetts authorities have been hunting for a killer...

Now's your chance to put your sleuthing skills to the test.