John Glatt, author of 'The Family Next Door,' spoke with us about how the Turpin children are doing now, whether Louise's history of abuse repeated itself with her own children and how the torture was allowed to go on for so long.

Ken Rex McElroy, a bully who menaced the farming community of Skidmore, Missouri for years, was shot and killed on July 10, 1981 outside a local bar. Witnessing the murder were McElroy's wife and dozens of local residents. Yet the gunman has never been identified.

Drugs are killing Americans in record numbers, but not everyone is being hit equally hard. Police and public-health workers battling the problem near Interstate Highway I-65—which runs through Alabama, Tennessee, Kentucky and Indiana—are at its front lines.

It's been nearly a decade since four bodies were discovered spread over a quarter of a mile stretch of beach in Long Island, New York. Since then, other remains have been found, with 10 victims or more now likely tied to a single perpetrator.

Israel Keyes—a murderer who perplexed even the FBI's top minds in criminal profiling—traveled America leaving 'kill kits' with weapons and other items in secluded locations, picking them up before abducting and murdering a chosen victim.

In 1978, four young people disappeared during their shift at a burger restaurant in Speedway, Indiana and turned up dead two days later. What happened remains a mystery and the case has yet to be solved.

Jan Broberg, the subject of a high-profile, captivating story about her abduction and rape when she was a child in the 1970s, spoke with us about her 'amazing' parents, how her abductor—a close family friend—so successfully groomed her family before the first kidnapping (there were two) and whether he might have other victims.

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.

During the 1970s, David Berkowitz, also known as 'The Son of Sam,' prowled New York City, fatally shooting couples in cars. By the time he was arrested in August 1977, he had killed six people and wounded seven others. Although the murders stopped after his arrest, several people who worked on the Son of Sam case are convinced Berkowitz didn't act alone.

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