Investigators find a few drops of blood on the floor by a shattered French door.

What is the new Peacock docuseries Making Manson? Learn more about the show, see the trailer, and uncover new Charles Manson ...

A new docuseries explores one of the most notorious figures of the 20th century and beyond: Charles Manson, an American cult leader, musician ... and mass murderer. Making Manson premieres November 19 ...

Police find a syringe in Gareth Pursehouse's home that is identical to the one found at the scene of Amie Harwick's death.

A syringe filled with yellow-brown liquid is found at the scene of a crime, but what exactly is it?

Friends reflect on Amie Harwick's early life and her drive to leave Pennsylvania to pursue "big things." ...

What is the new Dateline true crime podcast Man in the Black Mask? Learn more about it and find out how to listen.

In one of the most eerie and chilling murders in U.S. history, a 17-year-old boy terrorized two Massachusetts families before killing one of them. Daniel LaPlante was caught breaking and entering into ...

Liz Golyar's plan to kill Cari Farver involved using digital technology to impersonate her for three years. Find out more ...

For years, serial killer Michael Hughes operated in the shadows, until he was seen pushing a shopping cart down the street with the body of one of his victims inside. Watch Serial Killer Capital: Los ...

While many know about the Nightstalker and the Hillside Stranglers, there was less publicity surrounding the murders of 16 women in South L.A. during a three-year period beginning in January 1984.

Joyce Pelzer killed her ex-girlfriend, Shawndell McLeod, with the help of her new lover. Then, she tried to kill her new wife. Learn what happened in the murder.