Christopher Bernard Wilder became known as 'The Beauty Queen Killer' during a frenzied 1984 spree, where he criss-crossed the U.S., luring young women into his fancy cars and dangling the promise of work as a model, if they would just allow him to take their photographs. Some took the bait. Others, he took by force.

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.

It was the biggest cult prosecution in nearly a decade. In June 2019, NXIVM leader Keith Raniere was found guilty sex trafficking, forced labor conspiracy, human trafficking and multiple counts of racketeering—including sexual exploitation of a child. But while members swore by the 'self help' organization, rumors of its dark underside emerged.

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.

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.

Aiyana Gauvin, Adrian Jones and Roman Barreras are some of the high-profile cases from the past few years of children who were abused and ultimately killed by their parents. We speak with experts about why some parents unleash such extreme violence on their children.

Explore some of the major theories surrounding the more than 60-year-old unsolved case of a dead boy found in a box in Philadelphia, Pennsylvania on February 25, 1957.

On November 15, 1990, a 2-year-old boy, Billy Blankenship, was reported to have fallen down the stairs in his babysitter's care in Concordia, Missouri. The sitter, Tawny Sue Gunter, claimed she had put the boy in her basement as she prepared lunch upstairs. The boy suffered a skull fracture and later died. But that wasn't the end of the story.

Dr. Thomas Andrew, retired chief medical examiner of New Hampshire and now a forensic consultant, speaks with A&E True Crime about a surprising autopsy case he worked on that aided a murder case.

David Finkelhor, director of the Crimes Against Children Research Center and author of the book 'Nursery Crimes,' on why some babysitters kill and how parents can prevent their children from falling victim.