Police have solved, or are close to solving, a number of cases that have been cold for decades. Investigators are using new technology and research techniques and re-examining leads that previous investigators may have ignored.

The U.S. started the federal witness protection program to shelter people from the mob—but mob members often received protection themselves.

For incarcerated women, childbirth can be very different from state to state.

She and her young daughter were kidnapped by a former student.

They escaped a house of horrors. Now the three women help others.

A retired police investigator thinks the same person who killed JonBenét in 1996 could have killed two other girls in 1984 and 1993.

In 1989 amid a media frenzy, five Black boys were arrested for raping and beating a Central Park jogger. After years in prison, their charges were vacated—but their lives were changed forever.

In 1978, four people disappeared during from a burger restaurant and turned up dead two days later. What happened remains a mystery.

Historian Hallie Rubenhold, author of the book, 'The Five: The Untold Lives of the Women Killed by Jack the Ripper,' believes the victims of Jack the Ripper weren't all sex workers—they were just women who were asleep.

Kathy (Kate) Ann Jewell fled her home when her boyfriend, John Branden, raped and attempted to kill her. After that, he disappeared—and she spent years trying to ensure he'd never find her.

Because of the lack of statutes acknowledging Munchausen by proxy—and the general confusion about what this abuse looks like—law enforcement and courts often struggle with how to prosecute this type of medical child abuse, say experts.

When new evidence arises, or new technology becomes available, investigators may need to take a second look at a corpse.

Kamiyah Mobley was 16 years old when she discovered that Gloria Williams, the woman she knew as her mother, was actually her kidnapper.

Over a decade after she was found alive after being kidnapped as a child, Dugard has learned to drive, written two books and started a foundation to help other survivors.

In the mid-2000s, girls and women started disappearing. A few years later, their bones turned up in a grave—but some are still missing.

Authorities didn't locate Kamiyah Mobley, who'd been abducted at birth by a woman named Gloria Williams, for 18 years. We explore this unusual kidnapping case.

Veronica Compton tried to murder a woman to make it look like the police had arrested the wrong man, Kenneth Bianchi, in the Hillside Strangler killings.

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