Explore the stories behind the most notorious serial killers who shocked the world and changed the way we understand criminal psychology.

"She gave her mother forty whacks..." Lizzie Borden’s haunting rhyme and unsolved 1892 murders continue to haunt us.

"48 Hours" correspondent Erin Moriarty has learned a suspect has been identified in the 1991 murders of four teenage girls in an Austin, Texas, yogurt shop. This is according to one of the original ...

This ranges from true crime shows such as Netflix’s Mindhunter to the ... Gacy’s double life as a seemingly respectable citizen and horrific killer made him one of the most notorious world famous ...