The horrific murder that changed Britain.

Six members of one family were brutally murdered but the killer made one crucial mistake: he left survivors.

One cannibal killer even sent her a meaty recipe—and suggested she use herself as the main ingredient.

The Amityville Horror was more than a mere haunting.

Louisa Merrifield took advantage of her employer by murdering her in cold blood.

Was it desperation or desire that drove the man?

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

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

The string of killings still haunt Gilgo Beach.

"Each body was cut into as many parts as there are joints."

"Little House on the Prairie" could have been a lot more twisted.

Investigators uncovered a truly disturbing scene...

The director believes he interrogated the man responsible...

New evidence suggests that the murderer may not have been the man convicted.

Mary Rose Craver knew something was terribly wrong...

It's as if she vanished into thin air...

They hit the road for a romantic summer adventure, and were never seen again.

It's one of the most shocking crimes imaginable...

Gypsy was a murderer, investigators say, but she was also a victim of Munchausen syndrome by proxy.

Did the sadistic "Murder Castle" serial killer fake his own death in 1896?