On November 13, 1974, Ronald DeFeo Jr. killed his family in Amityville. Although he confessed, his motives remain unclear. Forty years after the crime, we look at some of the theories.

Edna Cowell Martin reflects on her bond with cousin Ted Bundy, initially charmed by his charisma. Unaware of his dark deeds, her perception shattered upon his arrest. In her new book, she shares her shock and grief, offering a personal view of Bundy's impact on their family.

Although it's rare for women to kill other women for their unborn babies, when it happens, the motive is usually beyond wanting a child.

The serial killer brought fear to the University of Florida and surrounding area after murdering five young women over the course of three days in 1990.

In January 1977, Gary Gilmore gained international attention for his choice to die by firing squad after being sentenced to death for the murder of two young Mormon men.

Lisa Montgomery spent years on death row after committing a horrific crime. While there, she began to recover from a lifetime of nightmarish abuse. In January 2021 she was the first woman executed by the U.S. government in 67 years.

Gary Heidnick's crimes helped inspire Buffalo Bill's character in 'Silence of the Lambs.' We spoke with the killer and self-described pastor's defense lawyer, Charles Peruto, Jr., about what it was like representing one of Philadelphia's most infamous criminals.

Posthumous DNA testing proved what Roger Keith Coleman repeatedly denied—that the Virginia man raped and murdered his sister-in-law in 1981.

It's an exceedingly rare group of people who escape the clutches of a serial killer—only to find their lives forever changed by the ordeal. Read what happened afterward to five survivors.

From William Williams to Jimmy Lee Gray to Jesse Joseph Tafero and others, the executions of a number of death-row inmates have not gone as planned in the U.S.