We speak with experts about the various reasons why notorious murderers become targets themselves while behind bars.

We speak with author Sarah Berman on her book, 'Don't Call It a Cult: The Shocking Story of Keith Raniere and the Woman of NXIVM.'

A&E True Crime spoke to Zeman about the findings that made him, along with investigative journalist Maury Terry, question the official account that serial killer David Berkowitz acted on his own.

Twenty years after actor Robert Blake’s hugely sensational 2005 murder trial ended in his acquittal, the shooting death of his wife Bonny Lee Bakley remains officially unsolved.

Read about the death of the businessman and children's entertainer, who liked to dress as 'Pogo the Clown' and was convicted in March 1980 of murdering 33 boys and young men, making him the worst serial killer in American history at the time.

In 1994, a South Carolina mother drowned her two young sons, Michael and Alexander, by launching her car into the John D. Long Lake. What's her life in prison like?

From Charles Stuart to Des Campbell, we look at some infamous killers who tried to make a quick buck putting their partners in the ground.

People with disabilities are especially vulnerable to becoming victims of financial, mental, physical or sexual abuse because they are often isolated and dependent on others for their care.

Twins Ronnie and Reggie Kray rose to notoriety as nightclub and gambling club owners who were involved in assaults and armed robberies.

Retired investigator Joe Kennedy established a coalition of active and retired investigators who help police departments in the U.S. solve cold cases. A&E True Crime spoke with Kennedy about how advances in DNA analysis have revolutionized such investigations.