In 1997, the 19-year-old British au pair was charged with the first-degree murder of 8-month-old Matthew Eappen.

We speak with Rob Sand about the Iowa Hot Lotto fraud scandal, the largest lottery-rigging scheme uncovered in the United States, and his role as the prosecuting attorney for the Iowa Attorney General's Office in the case.

For many years, a Georgia woman ran an underground network out of her Atlanta home in order to hide children who'd allegedly been abused. Some feel she was a hero, while others believe she was a kidnapper and vigilante.

We investigate why the Charlotte Police Department took so long to identify 'The Taco Bell Strangler' who targeted Black women in the 1990s.

A&E True Crime speaks with Brittany Wright, a forensic scientist, about how advancements in DNA technologies helped police solve the 1959 murder of 9-year-old Candy Rogers.

Polygamy is illegal in most of the world, but it is practiced by about 2 percent of its population. We investigate why it is rarely prosecuted in the United States.

In 2010 the Internet provocateur launched IsAnyoneUp.com, the first 'revenge porn' website, where users could post intimate images of other people without their consent. Where is Hunter Moore now?

Serial killer Edmund Kemper, later known as the 'Co-Ed Killer,' was released on parole from Atascadero State Hospital when he was 21 after shooting and killing his grandparents when he was 15. Why did psychiatrists allow him to go free?

The British socialite and Jeffrey Epstein conspirator was sentenced to 20 years in prison for her role in recruiting, grooming and abusing teenage girls over a decade. What made these girls trust her?

We speak with author Casey Sherman about his book 'Helltown' on Tony Costa's murderous rampage in Cape Cod, Massachusetts in 1969.