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.

Manson's murder conviction in 1971 left many, including his biological family, with guilt and unanswered questions.

It's been over 40 years since Jeffrey MacDonald was convicted of killing his wife and daughters. But he still claims he is innocent.

On A&E's 'Court Cam, surveillance cameras captured some extraordinary moments. As viewers await Season 2, here's a glimpse at 10 startling courtroom moments from some of the nation's most riveting high-profile cases.

A&E True Crime explores the stories of five young women who were vital members of Charles Manson's cult, 'The Family,' and what became of them after they were separated from the man who had so thoroughly dominated their psyches.

The true crime audience skews largely female, sparking some to question why the genre is so popular among some women. But in Rachel Monroe's book 'Savage Appetites,' she reverses that gaze, turning the lens toward four women who she thinks embody or challenge four classic archetypes of the genre: Detective, Victim, Defender and Killer.

How did Charles Manson, an illiterate ex-con, become such an influential cult leader and turn a group of peaceful hippies into cold-blooded killers? Journalist Tom O'Neill set out to answer this and more in his book, 'Chaos.' Read about Manson's early years—starting with his neglectful mother, then moving on to his stints in institutions for 'delinquent' children and ultimately, in federal prison.

Forehead mutilation, an LSD hamburger and a missing lawyer all made the Tate-LaBianca murder trial highly unusual.

From 'Kayak Killer' Angelika Graswald to cult leader Charles Manson, A&E True Crime looks at infamous criminals who profited in some way from their misdeeds, showing that sometimes crime does indeed pay.

Samuel Little murdered as many as 93 women, some almost a half century ago. But all these years later, he still remembers their faces. A&E True Crime spoke with sociology and criminology professor Jack Levin, who explained how serial killers remember their victims and why these details are so important to them.